I would have never known who Tom Evans Audio was, but thanks to a recommendation from my friend Barbara Streisand, I'm watching the whole video. Very impressed by Mend it Mark!
This dude is so fucking chill and realy talented... I like him and i realy enjoy watching him reparing stuff from a time where even my parents werent born... And he is so calm and free of any hate... the most thing you will here from him "thats an iffy" or somtehing similiair. Good Guy
If you look closely at the Tom Evans Audio stereo preamp, on the front panel there are 3 knobs for Bass Effect, Trebble Effect and Barbra Streisand Effect.
My popcorn is stocked and at the ready for this fight if he's dumb enough 🍿 Marks original video is now available on more than half a dozen different channels, it's spreading like a meme!
What everyone should emphasize is the astronomical ripoff of that product. A literal home made project that should not be sold more than like 150-200 dollars if made in a one piece, not as a production line item (you know economies of scale that makes each unit even cheaper the more you build) I mean for what they charge i would've expected the interior to be like a futuristic space ship, using titanium and gold and whatever other ultra rare materials (that also serve a function) And not some copper plated boards any kid can buy and even machine on a small diy cnc mill. using some bad pcb stacking and amateur soldering hour techniques of the actual product.
@@ElGoogKO Just to make it clear: Over 30 years ago, I was 15, I build audio stuff that way like Mr. Evans prefer to do today. In the age of 16 I build by own MOSFEF amplifier with a fully self build acrylic glass case, much more better looking than this pre-amp - still standing (and working) today, right behind me 2 meters away. The build quality of the pre-amp in this video is simply a joke. 25k for such a product is scam.
I probably wouldn't have taken the time to watch this repair had it not been for Tom Evans Audio taking the original one down. So I owe big thanks to them for introducing me to a new repair channel that puts out some very interesting content.
I'm a big fan of Mark, but this is not really the type of component I'm normally interested in. I'd probably have passed on this episode and watched another one of his, but you can be sure I watched this famous/infamous/controversial video all the way thru to the end! 🤣🤣🤣
That is the Barbara Streisand Effect. The origin was, there was a project in California to map the coastline of California. Countless pictures were taken of the coast. One of those pictures contained Barbara Streisand's house. She didn't want pictures to be out in the public and sued over privacy... however the act of suing cause far more attention, and far more people were interested and/or viewed pictures of her house. Had she done nothing, the pictures would likely have been relatively unknown and viewed by few people. Simply, trying to remove attention, can sometimes cause far far more attention.
Now where's Tom gettin fancy imported BBQ sauce from Nicaragua along with his fancy imported Venezuelan cheese for his fancy imported Wagyu beef burgers from a lil farm just north of Tokyo while he occasionally builds a preamp tho!??
It doesnt sound fair to say its a piece of junk. Mend it Mark never said anything negative and sort of praised the circuit. (except that the whole thing was badly damaged from being dropped).
MendItMark makes me proud to be British! The fact that he doesn’t explicitly say any thing negative but just describes what he sees for its construction and explains what a simple circuit it is, albeit with careful component matching, is quietly damning
Hear, hear! He says more by saying less and being a gentleman about it all. The viewer is presented with facts and will form their own opinion all right.
No individual item of hifi should cost 25K, the sum of components would most likely be under £100. Audiophile products that’s are marketed as “Alien Tech” would always raise suspicions. The construction of this particular item is at prototype level and in my opinion as a design engineer with over 40 years of experience should not even be considered a product in its current form ! The company or person marketing such should be ashamed of themselves for allowing such a product to be sold to an end user. Does it even have a genuine CE certification ? Has anyone tested the claims that it is to the spec? Be interesting to find out !!
@@neilscotford6032I guess it would probably pass safety at least. Not much radiates from it. As long as the mains side is safe, it would pass safety tests. It may not pass ESD - that’d be my primary concern. If I was marketing something like this for market at this price point, it would be put together as-if it was an aerospace assembly. Machined aluminum or copper block for enclosure, boards screwed down properly, good quality connectors etc. £25k sale price sans tax leaves about £8k for materials. You can build a whole lot of a preamps for that kind of money :)
@ totally agree, I’ve seen some very well designed and built equipment for a fraction of the cost of this unit, it amazes me that anyone would buy these at this price point. Audio fools …….. I saw mains input fuses advertised as “quantum fuses” a while ago with no technical specification to substantiate the claims and they where thousands of pounds each !!! You’d have to be completely deluded to believe they make any difference to the sound quality 🤣🤣🤣
big tech and governments will push DRM per file on us all, making OSs delete content on your drives that are flagged as naughty. keep everything on cold storage far away from malware
It's interesting that none of the wire is shielded, and the box isn't metal. Looks like a 20k antenna to me. I know it's unbalanced audio. But man, I have cheap DI boxes that are made better.
UA-cam just fed me this video. Sorry I’ve never heard of you before but thank you for supporting Mark. I’m a big fan of his work. And so now I’ll go and look up some more of yours too 😎
I think Intel deserves to know that Tom Evans' "lithos" logo on the back of the unit looks rather similar to Intel's logo. Would love to see a discussion between them about that and by golly I sure hope *cough cough Tom doesn't have to face any insurmountable legal fees... that would be unfortunate for Tom!
@@RetroArcadeGuy But with the financial woes that semiconductor manufacturer are in, they might need to "pass the collection tin" around their offices to fund the action ... with > 10k _less_ potential contributors since the layoffs. 🤣
Ive watched it twice now and i know it comes down to presenting style but he really sounds like he’s taking the piss 😂 no wonder Evans has got the hump
Yeah mark didn't really say a single bad word about the unit, normally people try to take down scathing reviews, ofc unlawfully, but in this instance it was merely the fact he showed what was inside. That was enough to embarrass this manufacturer into freaking out .... I've been waiting for another of these audiophool devices to get some serious lash back, ever since Linus tech tips tore down the digital network switch that had crystals glued inside (like litteral lumps of raw minerals) to "reduce noise", "boost signal integrity" and "enhance the audio quality" ... of the *DIGITAL* signal lmfao.
As someone who has reverse engineered pinouts/signals for custom ICs on arcade game PCBs from multiple manufacturers and reverse engineered partial schematics of said boards during repairs, this video of yours has earned you another subscriber. :)
I used large farm equipment from John Deer in the early 70s and I was not happy to hear they wanted to keep farmers from fixing their own equipment 35 years later. It was nice of you to involve yourself in helping if not solving the problem all together. Thanks Louis
Mark is not just a very compitent electrical (reverse) engineer, he's also a bloody artist if you ask me! He's also hand molded new pot caps for things when they were no longer in production, replaced printed text on items, and even re-wound broken transformers by hand. So cool to see his passion for the craft.
He tried to a repair on a tape deck belt wheel, got it wrong, then machined a new one from scratch to fix it; really impressive range of skills he has.
Same. Absolutely fantastic work on his part. The perfectionist in me was a bit sad he didn't properly remove the glue on the felt pads before regluing them, but no one is gonna notice and perhaps this would've resulted in a less flush reattachment despite the give. Anyways, ridiculous nitpick on an otherwise absolutely outstanding repair job. (e: typo)
@@al_kaloid He does this for a living, and things I would do (that are seriously OCD), like making every solder joint look as close to the same as each other etc, just don't make sence to do in a commercial repair shop if A) you can't even see them, and B) they don't effect the useage of the device, and finally C) if they save a bunch of time by not doing. Only if A) and B) are met have I ever seen mark "cut corners" because of C). Which aren't really cut corners, more like just getting the job done without wasting time on unimportant things when you have months worth of devices backloged, as your repair shop is so popular and you're a one man band, as is often the case with mark. All the actual important things mark does with great care and attention to detail, but often little things like that, that will take up a bunch of extra time for almost 0 gain to the end user, he'll just leave. I do agree though when I see it it also makes me sad, but I totally get why he doesn't 😉✌️
He measured and matched each component. I believe him whole heartedly. He got a very precise scale and weighed each component. He then ground down the top surface so that each one was exactly the same weight.
Watched through the whole vid which i wasn't planning to. Mark is simply such a pleasure to watch doing that repair i loved watching it all and seeing how he fixed it. Love to have such people actually handling repairs with honesty
I absolutely love Mend it Mark. He is full of detail and thoroughness. Stay strong repair guys, I am with you from my wee repair shop in Scotland! It is your right to repair!
Congrats Tom! You've managed to take a video that you wanted NO ONE to talk about, and make EVERYONE talk about it. Thanks for highlighting this garbage, Louis!
I found Mend it Mark through your video a few days ago. His delivery is so enchanting, I watched a full 40m tape deck repair with intrigue. I don't even overly care about the topic, but his videos are worth checking out 100%
I don't usually like watching Repair videos, unless I'm repairing something, He is clearly very good at presenting, and teaching you about the repair. Hat's off to the guy. I would sub, but my occasional watch would likely hurt more than help.
This repair video was a joy to watch. Mark's a fantastic teacher and he was nothing but gentle on this product, fixing the issue and going above and beyond to restore it to good-as-new condition. As others have said, there's a lot of mud you could sling at this for its price tag, but Mark was very much above that and focused on the job. Repair community strong 💪
This chap seems like an outstanding individual of good cheer and fine character. What a pleasant man. I am so sorry that he ever had to deal with the fear of having a video taken down, and good on you Louis for standing up for a fellow repairman. I wish I could buy you both a beer.
He never came up on my radar until this debacle, I like watching retro computer repairs but a couple of my subscribed channels have also done some audio and TV stuff so Mark has now got another subscriber here.
Thanks for stepping in to this Louis. Mark is a great chap, he's knowledgeable, skilful, modest and honest. We must not allow anyone to take advantage of him.
What an absolutely fantastic video by Mend It Mark (and of course Louis is always awesome). I can't believe he kept bringing out trick after trick, solving problems on-the-fly. Missing pad? Copper rivet! Broken screw? Blowtorch/screwdriver! Glue overage? Scouring pad! Broken plastic crack? Black wax! Bent threaded pipe? Chop cut and band sander! Near the end, when he was going to glue the felt back to the bottom, I half expected him to say "so here I'm boiling some horse hooves ..." as he is just so darn resourceful. Consider me subscribed, Mark.
It's just fantastic to see so many people standing up for Mark. This is what happens when you try to bully people Tom; I hope you have learned your lesson.
I can’t believe I just spent 45 minutes glued to a video of someone repairing something I know nothing about. (Initially, I just started playing it to contribute to the Streisand effect, but it was genuinely interesting.)
I saw Mend it Marks response video the other day and wondered what was going on but the video is back up so I guess common sense prevailed! So glad I found the Mend it Mark channel the guy is outrageously skilled in the repair field! From machining new parts to rewinding tiny motors it’s one of my favourites! He’s also got a good sense of humour!👌🏼😊
I never heard of Tom Evans or Mark. Now, Mark is one of my favorite people and I have been suggesting his channel to like-minded friends. Also, I do not like Tom Evans and will ensure I never spend a single pence that would end up in his pocket. Thank you, Louis.
Nothing about that amp screams "quality" on the inside. Plastic stand-offs, scratched off components, and re-purposed blank PCB's used as grounding plates (although yes, it does the job). @MendItMark is awesome. A one-man army when it comes to repairs! Thank you Louis for supporting him!!!
I'm not saying it's worth £25k but it's the time it takes to measure and match all the components for the least amount of noise. Plus it's hand built. Being delicate or bulletproof doesn't really matter and audiophiles don't really care 99% of the time because it just sits on a shelf. Value is subjective with audio equipment.
The circuit design side seems to be ok, there is nothing really wrong with that kind of design choice to break it up to million boards but.. that is DIY kit stuff, not high end 20k stuff... DIY raiser pins when you can order those in neat packages, using PCBs for ground planes... For 20k i except custom machined brass ground plate that is engraved on top of each tower of boards, proper shelfs where each board slides in with end connectors, thicker wires connecting power around the board and proper wire management etc. You would maybe be ok charging 1k for that, it is still lot of manual labor but... Having cardboard slits to make the freaking chassis fit.. dear lord, at 20k everything needs to fit in perfectly with a satisfying feel, precision machined to ridiculous tolerances. It still would not be money's worth when it comes to perceivable sound quality but at least the build quality would match the sticker.
@@drivejapan6293 exactly, if they are actually measuring, balancing, matching, etc. the parts we have no way of knowing how many parts just don't make the cut and end up in the bin, could be testing hundreds to find their winner. The variability in commercial audio and video gear is absolutely wild. For instance, I buy 3 lenses and return 2 and thats at the "prime" multiple thousand dollar level. Its easy to see the difference. I do the same for mics and field recorders but I buy 5 and return the 4 worse ones, easy to hear the differences and see them via software, they are all over the place and god help you if you are trying to match to an existing kit. Some capacitors have tolerances in excess of 20%. Even 2% you'd be able to hear depending where its placed which isn't out of the ballpark (at all!) for an off the shelf electrolytic tantalum capacitor. If Evans is able to deliver an extremely consistent product, perhaps they can justify the price tag....using the DMCA to push around people is unjustifiable though.
I was in awe of his via repair with the rivet. I haven't seen that before! Then, he didn't even need it because it didn't have a wire in it. LOL Great video. This guy has answers to every problem he comes across. I loved it.
This isn't just a repair video, where someone had done all the work prior ala "if you have this fault, replace that component". Clearly this is an educational video... Even I'm somewhat familiar with op-amps I learnt a thing or two, thanks Mark. And thank you Louis for reuploading it, I didn't had the chance to fully watch the original video.
Mark goes above and beyond and does way more than just replace components. The one where he completely rewound the coil on a motor was outstanding! He often completely rebuilds casings and parts in his repairs. His skills and presentation are astounding. He is also not afraid to show when he makes mistakes which is brilliant. I am glad you are supporting him.
There is something undeniably therapeutic about watching some one who actually knows what they are doing fixing a piece of electronic kit. Awesome that you have decided to support this gentleman who clearly does nothing else but sheer his knowledge and help people. It's hard to understand why that would ever be regarded as a crime.
Well, when you combine obscenely high prices, customers who are preconditioned not to question magical thinking & quackary (in this case, audiophiles), and products built using unicorn horns, angel feathers & pixie dust, the charlatans selling their collected magic smoke & snake oil really hate having their con exposed. *_The wizard must loudly insist you do not pull back the curtain!_* They wouldn't feel so threatened if they were honest with what they were selling, and charging accordingly!
Although what Tom Evans did was intended to hurt him, the whole affair has greatly benefitted Mark in the long run. His channel subscriptions are way up, and I'm sure he has been flooded with business from people needing repairs and wanting them done correctly.
@@robertjune1221 Oh absolutely, that Streissand Effect claims yet another W! Like moths to a flame, these types always get drawn in overestimating their ability to control the narrative, they do their dirt thinking they can manage the information flow...somehow..., then quickly realize that *_opening_* Pandora's box was the easy part.
Mend it Mark reminds me of my dad. I spent many weekends and Wednesday afternoons watching him fixing and tinkering with electronic equipment. We spent an entire summer repairing a 21 inch Sony monitor. I remember him reviewing the equipment while he’s taking them apart, just like Mark does. “This is cleverly designed / the caps on this are cheap / Philips is trash”. My dad also made his own schematics, pixel-by-pixel on a DOS pc. Bless you, Louis and the internet, for protecting Mark in this day and age.
😮 I must say that I have had many Philips products, and they have always been super durable, and of highest quality (per their price range). Much more so, than other more expensive brands. Just want to insert my "5 cents". 🙂🇸🇪
Thank's for the re-upload, This is quite a nice video to watch. I bet the German reseller HiFi-Studio Wittmann will have a hard time next year in May at the HighEnd Audio Munich 2025 😁
Man mend it mark did a very good job at not bashing the product, instead giving you all the info you need to come to your own conclusions. Very well done mark.
He didn't even suggest it was a bad design. I've only seen people saying that after the copyright thing. I looks handmade but Mend it Mark sort of praised the circuit.
@@jeffh8803 yeah, he did explain that tuning circuits can certainly be an expensive endeavour... but the asking price? make your own mind up. Audiofools pay whatever
When Louis said he'd be mirroring an electronics repair video for another creator, I knew I would watch it, if only to play my part in the marvelous Streisand effect. I did not know, however, that I would be subjected to well over 45 minutes of Mend it Michelangelo illuminating Tom Evans' Last Judgment all over the ceiling of this Sistine Channel. That was marvelous. Mark is a virtuoso, and I would not have discovered his work if not for you, Louis. Thanks to the both of you! I am going to go watch every last second of Mend it Mark's videos, now.
__ It was truly a multifaceted exhibition! Where you saw a virtuoso painting a vast mural, I heard an elite composer's magnum opus. His masterful command of soldering iron & oscilloscope played the electronics beautifully! Do you think he graduated from Joule-iard? 🧐 (I considered using "Mend it Mozart", but I couldn't compete with your "Mend it Michaelangelo". Bravo 👏🏽)
I can’t believe I just spent 45 minutes glued to a video of someone repairing something I know nothing about. (Initially, I just started playing it to contribute to the Streisand effect, but it was genuinely interesting.)
It could be argued that tom evans is very clever in noticing that audio types will cough up for gear based on its very high price. It could also be argued that the less you spend on the components inside the item the greater will be the profit. It could be argued that this would seem to be the limit of his ability to run a busines based on caring about anyone other than himself. Thank you Louis for giving us a chance to watch again a very clever and decent man take us through this piece of equipment.
By opening this High End device the true quality of craftmanship and sense for quality of used materials and connections, which went into it, are clearly shown. There are countries in this world, where you are done for good for the rest of your entrepreneur's life, after showing up with such a "product". I think of Japan, Finland, Switzerland and Germany for example. To call for 25.000£ for this piece of "art", is just ridiculous. And I would even prefer a phono-pre-amp produced by a drunk chinese soldering apprentice to this one! Thanks for your shown support and the help for your brother-in-arms! Best regards, JES👍🏻
What an attitude whiplash from Louis's "🔥TRY ME🔥" right into Mark's disarmingly pleasant and chipper introduction. I hope Mark keeps going for years. He has one of the best electronics repair channels along with Mr. Carlson's Lab.
Once all the dust has settled, and Mend It Mark has settled into a comfy victory post-drama repair, and Louis has maybe even calmed down, I'm hoping to have The Mystery Of The Rolling Plains of DIP Switches explained to me.
The bank of DIP switches are common for MC/MM pickup amplifiers. They allow the user to adapt the resistance and capacitance that will load the pickup. Optimum energy transfer happens when the input impedance of an amplifier matches the output impedance of the signal source. For stronger signals, that's normally not important so lots of audio equipment might have maybe 100 kohm input resistance to load very little. But for extremely weak signal sources like a moving coil pickup, it really helps to try to match the amplifier input to the signal source because weak input sources means you need to be extra careful with noise - lots and lots of amplification is needed of the weak signal.
@@perwestermark8920 I really did enjoy Mark's explanation of the idea of averaging across several isolated amplifiers to cancel out the stochastic noise from the signal. Suddenly made the whole intention of the design clear. I've made three phonostages from various kits and never gotten one to be quiet enough to be acceptable. Maybe somebody should sell a kit version of this amp, that would put the boot to Tom Evans! :D
I tried pausing and looked for wires, I did not very clearly, but that might just be because of other stuff got in the way. It looks like there might be two sets of wires coming from the input jacks, so it might be for input resistance adjustment like Per said.
@petehurd5301 sqrt(N) is a common formula for noise in electronics. I did build a preamp with quad circuits many years ago, based on TL074 (or might have been the TL072 - was over 30 years ago). Started from a design in Elector. Learned one thing about J-FET - make a voltage follower but forget to mount the input resistor to ground and you get a great radio receiver because of the huge input impedance of about 1 Tohm - 10^12 ohm...
Thank you for putting this back out. I was one of the original commenters and an engineer for over 30 years now. this reminded me of the kind of thing i built in my mum's kitchen for a few UK pounds as a teenager!
Dear Mr. Rossmann I want to express my deepest respect for you, Sir. You channel your energy (and crazyness) to let some really valuable things happen to individuals, the community, the environment and even to youtube. To me (and I guess to many others as well) you are an inspiring person and I am very thankful for that. Take care of yourself and your family; I wish you all the best! Sincerely, G. Luther
I watched Marks original video before the takedown, but I'm going to watch it again here so UA-cam recommends it to as many people as possible. Appreciate your work Louis.
Mark is such a nice person. It was Techmoan that told me about his channel and i have watched everything he has uploaded since then. Mark derserves to be treated fair and i like what you do for him, because you have the knowledge to fight back. Thank You. Peter, Denmark.
Mend it Mark is a really down to earth guy. Expert electronics guy, and needs way way more recognition for his efforts. I don't think he meant to expose the overpriced pre amp, but the pandoras box has been opened now. Hopefully he gets a ton of new subs out of the whole debacle. 😀
I watched this on Mark's channel before the takedown. Thank you for defending him and reposting this. There are so many small-minded, ignorant, litigious people out there. I always like his cheeky chuckling! I'm laughing at another chuckle as I write this, lol! You've got a new subscriber, Mr. Rossmann.
Anybody in there right mind would offer that man a job / for advice rather than giving him a copyright strike. The video by Mark is awesome and his level of skill is also quite remarkable. Thanks for the re-upload!
Putting aside the bunfiight and what may or may not happen next … you have to admire Mark and his quiet competence. I’m subscribing to his channel and I encourage everyone else to 👌
That intro was priceless. Thank you Louis, you're a treasure. Watching to the end for algorithm etc. At the beginning of Mark's video and see Tom Evans using a cliche Intel parody logo when claiming copyright on Mark's video. Oh, the irony. The irony indeed. Everything about it looks cheaply homemade. How he charges $25k for it is beyond me. Also, just my opinion, so sorry Tom Evans, you can't come at me!
I literally was watching this on his channel. As I was watching, the video came up with an error after 15 minutes in! I saw lots of other channels chipping in and helping Mark re-uploading this video and was delighted to finish watching it. Great that Louis uploaded it too!
Louis that is the single best threat I've ever heard in my life. You absolute legend. (btw I lost your Signal contact after we met at LTX and talked HiFI)
The hand drilled holes in the spare cheap copper clad 'shielding boards' are funny too - right next to the edge. I.e., useless. So many design errors in this product, it's a horror. Complexity magnified.
@@seheyt I wouldn't look at the dip-switches either: there's no label on them and they are unlikely to cause the fault. If you want decent labelled and useful switches, the £250 Pro-Ject DS is good.
I think Tom was more worried that we would all see that the DIP switches don't seem to be connected to anything. Great repair Mark well worth watching and Thanks Louis you are a STAR.
you can clearly see they terminate in a ribbon cable at the bottom of their board, which goes to one of the other boards. I won't defend this product, but lets not create more false information about it huh! I also ask people to remember, this is HAND MADE, in the UK, which has minimum wage laws, and employer contribution rules. Given this box is hand assembled, whether or not we like the design, it would have taken a human (or team of humans) a very very long time to put this together. The cost of labour, parts, and R&D here, would legitimately cost thousands of UK pounds.
@@1061shrink1061 On two decent PCBs, one for each channel, these boards would not take long to populate. Add a trimmer pot to match the offsets and it's not a complex job. Add in an offline battery supply and it's probably £600 cost, sell for £2.5k.
The professionalism on display from Louis and Mark in this video is amazing. After all the drama I was expecting Mark to crap on the thing but he showed so much respect for a customer's equipment.
Originally watched it on Marks channel. And then on another channel . Now the algorithm took me to you. Seems AI is rebelling against its master and you are not being shadow banned. Loved the grand “FU” Tom. Made my morning. Subscribed. And an audiophile that repairs.
He listens to Khruangbin at the end, that's even more of an indicator that Mark is a top notch guy. I watched the whole thing. Such a dedication to his craft. Well done Mark. Thanks Louis as always!
Louis, thanks for fighting the good fight and standing up for what’s right. On the off chance you read this- I’m and EE who wants to build a line of products that are geared towards repair to help provide alternatives to the crap on the market today. Just not sure which products to start with (toaster, audio equipment, radios, etc.) Anything on your list that you’ve always wanted re-designed but made in a way that respects ownership?
Actual answer probably Bluetooth speakers? They’re all about the same functionally but never have easily replaceable batteries or repairable speakers / electronics when they’re eventually dropped or broken
There was a time when schematics could be found inside purchased electronic items. When I bought a Moog Prodigy synthesizer in the early 80s, you got a full schematic in the user manual that came with the synth. I wish we could return to those days.
I had already seen the re-upload of the Internet archive version of the video but I really enjoyed watching this again. Also did it to boost the algorithm. However it is such a satisfying experience to watch Mark's attention to detail and craftsmanship. Thank you Louis!!
Legend! And Mark is a true professional who loves his work. For him to have reversed engineered and documented those circuits to that level of detail is not just next level, it’s on another planet.
Man I'm so pleased to hear the work you have been doing regarding right-to-repair. I did not know about this issue but it is something I feel VERY strongly about. 🙏
Tom Evans should issue an apology to Mend it Mark, and write to UA-cam to ask for the copyright strike to be removed and the original video to be restored. He should also offer to pay Mend it Mark for creating the service manual and host a copy of it on his own website.
Tom did the excellent job promoting his shoddy work and products. Now the whole audiophile world is up do date, and up to the state of quality of the products he makes. 🎉🎉🎉 Cheerio Tom!
I would have never known who Tom Evans Audio was, but thanks to a recommendation from my friend Barbara Streisand, I'm watching the whole video. Very impressed by Mend it Mark!
This dude is so fucking chill and realy talented... I like him and i realy enjoy watching him reparing stuff from a time where even my parents werent born... And he is so calm and free of any hate... the most thing you will here from him "thats an iffy" or somtehing similiair. Good Guy
I watched the original before it was taken down ;-)
I thank Tom Evans for accidentally recommending me Mend It Mark's channel.
I didn't know who Mend it Mark was either and now I've found an excellent channel. So 'thanks' Tom Evans Audio for being such massive douchebags.
All Praise to Louis Rossman!!!
If you look closely at the Tom Evans Audio stereo preamp, on the front panel there are 3 knobs for Bass Effect, Trebble Effect and Barbra Streisand Effect.
Lmao, Tom opted for the Streisand effect boost.
I am sure it is CAFO
Cryalot And Find OUT
@@madmax2069Streisand to 11
@@kurtvanluven9351 Animals as Leaders, hell yeah
Streisand effect peddle
My popcorn is stocked and at the ready for this fight if he's dumb enough 🍿
Marks original video is now available on more than half a dozen different channels, it's spreading like a meme!
I upped it to mine before I headed to work this morning, as I was doing so seemed like it was on about a dozen other channels or so.
What everyone should emphasize is the astronomical ripoff of that product.
A literal home made project that should not be sold more than like 150-200 dollars if made in a one piece, not as a production line item (you know economies of scale that makes each unit even cheaper the more you build)
I mean for what they charge i would've expected the interior to be like a futuristic space ship, using titanium and gold and whatever other ultra rare materials (that also serve a function)
And not some copper plated boards any kid can buy and even machine on a small diy cnc mill. using some bad pcb stacking and amateur soldering hour techniques of the actual product.
@@ElGoogKO Just to make it clear: Over 30 years ago, I was 15, I build audio stuff that way like Mr. Evans prefer to do today. In the age of 16 I build by own MOSFEF amplifier with a fully self build acrylic glass case, much more better looking than this pre-amp - still standing (and working) today, right behind me 2 meters away. The build quality of the pre-amp in this video is simply a joke. 25k for such a product is scam.
I'm happy others were able to upload while I was busy and unable to make the time.
I support this message.
I probably wouldn't have taken the time to watch this repair had it not been for Tom Evans Audio taking the original one down. So I owe big thanks to them for introducing me to a new repair channel that puts out some very interesting content.
I'm a big fan of Mark, but this is not really the type of component I'm normally interested in. I'd probably have passed on this episode and watched another one of his, but you can be sure I watched this famous/infamous/controversial video all the way thru to the end! 🤣🤣🤣
That is the Barbara Streisand Effect. The origin was, there was a project in California to map the coastline of California. Countless pictures were taken of the coast.
One of those pictures contained Barbara Streisand's house. She didn't want pictures to be out in the public and sued over privacy... however the act of suing cause far more attention, and far more people were interested and/or viewed pictures of her house.
Had she done nothing, the pictures would likely have been relatively unknown and viewed by few people.
Simply, trying to remove attention, can sometimes cause far far more attention.
mark is excellent. you'll enjoy his repair collection.
Exactly the same for me, found another excellent repair channel thanks to snake oil Tom Evans! I hope Mark reaps from this!
He's awesome
Really nice of you to help Mend it Mark who is a lovely chap.
What Tom Evans should do is thank this guy for doing such a sympathetic and thorough repair on that unit...
Now where's Tom gettin fancy imported BBQ sauce from Nicaragua along with his fancy imported Venezuelan cheese for his fancy imported Wagyu beef burgers from a lil farm just north of Tokyo while he occasionally builds a preamp tho!??
@infinidominion Damn it,, now I'm hungry !! :)
...yea, considering what a knocked-together heap of junk it is!
It doesnt sound fair to say its a piece of junk. Mend it Mark never said anything negative and sort of praised the circuit. (except that the whole thing was badly damaged from being dropped).
And for saving his customer a £6k bill.
MendItMark makes me proud to be British! The fact that he doesn’t explicitly say any thing negative but just describes what he sees for its construction and explains what a simple circuit it is, albeit with careful component matching, is quietly damning
Hear, hear! He says more by saying less and being a gentleman about it all. The viewer is presented with facts and will form their own opinion all right.
and Tom Evans Audio makes me ashamed to be :(
No individual item of hifi should cost 25K, the sum of components would most likely be under £100.
Audiophile products that’s are marketed as “Alien Tech” would always raise suspicions.
The construction of this particular item is at prototype level and in my opinion as a design engineer with over 40 years of experience should not even be considered a product in its current form !
The company or person marketing such should be ashamed of themselves for allowing such a product to be sold to an end user.
Does it even have a genuine CE certification ?
Has anyone tested the claims that it is to the spec?
Be interesting to find out !!
@@neilscotford6032I guess it would probably pass safety at least. Not much radiates from it. As long as the mains side is safe, it would pass safety tests. It may not pass ESD - that’d be my primary concern.
If I was marketing something like this for market at this price point, it would be put together as-if it was an aerospace assembly. Machined aluminum or copper block for enclosure, boards screwed down properly, good quality connectors etc. £25k sale price sans tax leaves about £8k for materials. You can build a whole lot of a preamps for that kind of money :)
@ totally agree, I’ve seen some very well designed and built equipment for a fraction of the cost of this unit, it amazes me that anyone would buy these at this price point.
Audio fools ……..
I saw mains input fuses advertised as “quantum fuses” a while ago with no technical specification to substantiate the claims and they where thousands of pounds each !!! You’d have to be completely deluded to believe they make any difference to the sound quality 🤣🤣🤣
Try deleting it, Tom. Try it. It's on multiple hard drives now. You can't stop all of us.
big tech and governments will push DRM per file on us all, making OSs delete content on your drives that are flagged as naughty. keep everything on cold storage far away from malware
It's interesting that none of the wire is shielded, and the box isn't metal. Looks like a 20k antenna to me.
I know it's unbalanced audio. But man, I have cheap DI boxes that are made better.
Yeah I already saw it elsewhere a couple of days ago. It's not going anywhere
You can't stop the signal
@kestrel4077 the spice must flow
UA-cam just fed me this video. Sorry I’ve never heard of you before but thank you for supporting Mark. I’m a big fan of his work. And so now I’ll go and look up some more of yours too 😎
Y 4:07
I think Intel deserves to know that Tom Evans' "lithos" logo on the back of the unit looks rather similar to Intel's logo. Would love to see a discussion between them about that and by golly I sure hope *cough cough Tom doesn't have to face any insurmountable legal fees... that would be unfortunate for Tom!
I had the same thought 😉
I don’t think intel is in a position to push a fight for copyright infringement of a logo they haven’t used in decades
FAFO😂
@@MisterCoolGuy1 Of course they can, even if not in use, that shit is still patented AND copyrighted!
@@RetroArcadeGuy But with the financial woes that semiconductor manufacturer are in, they might need to "pass the collection tin" around their offices to fund the action ... with > 10k _less_ potential contributors since the layoffs. 🤣
Part of me almost wants Tom Evans to copyright strike this video just to see what Louis would do lol
I'm sort of hoping as well.
Well, we're in luck cuz stupid people, when confronted with their stupidity, tend to double down instead of retreating! :D
Got my popcorn at the ready 🍿🍿🍿🍿 XD
No chance. It's all over UA-cam by this time. Louis is a bit late.
@@audiogek Louis was one of the very first people to discuss this.
Mark's cheeky and cheerful attitude is a perfect antidote to the pretensions of audiophile extremists.
Yeah so positive uplifting I subbed much like Louis. Find it therreputic I'm not an EE in any way.
Ive watched it twice now and i know it comes down to presenting style but he really sounds like he’s taking the piss 😂 no wonder Evans has got the hump
@@ComeAndAveAGo Absolutely not. But he does deserve to have the piss taken out of him. The build was total garbage.
@@ComeAndAveAGo
Taking a piss? Where? How? Maybe a bit at the end. Still quite respectfully mocked the price.
Totally agree! Fed up of idiot audiofools and their snake oil. The time has come end the audiofool scams.
I’m glad you’re standing up for him, he doesn’t deserve this
Yeah mark didn't really say a single bad word about the unit, normally people try to take down scathing reviews, ofc unlawfully, but in this instance it was merely the fact he showed what was inside. That was enough to embarrass this manufacturer into freaking out ....
I've been waiting for another of these audiophool devices to get some serious lash back, ever since Linus tech tips tore down the digital network switch that had crystals glued inside (like litteral lumps of raw minerals) to "reduce noise", "boost signal integrity" and "enhance the audio quality" ... of the *DIGITAL* signal lmfao.
@@DaftyBoi412 well evans is right to be embarassed. the mechanical build quality of this thing is of the lowest standards ever
@@ledoynier3694I was amused by the paper dividers in the corners. Lol.
@@luc61786 shims! not dividers!
Mark is a genius at his work. He is a very nice and sweet guy sorry that he is smarter than the manufacture. Mark is awesome.
As someone who has reverse engineered pinouts/signals for custom ICs on arcade game PCBs from multiple manufacturers and reverse engineered partial schematics of said boards during repairs, this video of yours has earned you another subscriber. :)
I used large farm equipment from John Deer in the early 70s and I was not happy to hear they wanted to keep farmers from fixing their own equipment 35 years later. It was nice of you to involve yourself in helping if not solving the problem all together. Thanks Louis
I was expecting the component level repair, but the plastic casing sanding and polishing was a beautiful cherry on top. Thank you louis for this
Mark is not just a very compitent electrical (reverse) engineer, he's also a bloody artist if you ask me! He's also hand molded new pot caps for things when they were no longer in production, replaced printed text on items, and even re-wound broken transformers by hand. So cool to see his passion for the craft.
He tried to a repair on a tape deck belt wheel, got it wrong, then machined a new one from scratch to fix it; really impressive range of skills he has.
Same. Absolutely fantastic work on his part. The perfectionist in me was a bit sad he didn't properly remove the glue on the felt pads before regluing them, but no one is gonna notice and perhaps this would've resulted in a less flush reattachment despite the give. Anyways, ridiculous nitpick on an otherwise absolutely outstanding repair job. (e: typo)
@@al_kaloid He does this for a living, and things I would do (that are seriously OCD), like making every solder joint look as close to the same as each other etc, just don't make sence to do in a commercial repair shop if A) you can't even see them, and B) they don't effect the useage of the device, and finally C) if they save a bunch of time by not doing. Only if A) and B) are met have I ever seen mark "cut corners" because of C).
Which aren't really cut corners, more like just getting the job done without wasting time on unimportant things when you have months worth of devices backloged, as your repair shop is so popular and you're a one man band, as is often the case with mark. All the actual important things mark does with great care and attention to detail, but often little things like that, that will take up a bunch of extra time for almost 0 gain to the end user, he'll just leave. I do agree though when I see it it also makes me sad, but I totally get why he doesn't 😉✌️
@@DaftyBoi412yeah that's more of a hobbyist thing to do. If you have OCD you can't make money in repairs/restorations.
I hope Mend it Mark gets ONE MILLION subs thanks to this. He is a genius repair tech and a fantastic teacher.
I sub’d a few days ago.
Yup he's the boss. Been a sub for a long time. Enjoyable to see him do his repairs. 😀
Just hearing of him from this controversy but I absolutely love his video style, he's clearly an amazing teacher
Can't wait this guy to lay his hands on some really cool consoles, SSL/API level.
And/or on reel-to-reel machines.
@@geoffstrickler you gotta watch the Aiwa tape deck repair. Legendary.
He measured and matched each component. I believe him whole heartedly. He got a very precise scale and weighed each component. He then ground down the top surface so that each one was exactly the same weight.
Haha. I suspect offsets could be trimmed out with a preset on each. 5 minutes with a multimeter and it's good to go.
🤣
You got me, you prick. You got me 😂😂😂
So you are Tom Evans 😂
I'm going to say it now for the future comments:
r/whooosh
Watched through the whole vid which i wasn't planning to. Mark is simply such a pleasure to watch doing that repair i loved watching it all and seeing how he fixed it. Love to have such people actually handling repairs with honesty
I absolutely love Mend it Mark. He is full of detail and thoroughness. Stay strong repair guys, I am with you from my wee repair shop in Scotland! It is your right to repair!
Congrats Tom! You've managed to take a video that you wanted NO ONE to talk about, and make EVERYONE talk about it. Thanks for highlighting this garbage, Louis!
That's what the Streisand effect does.
Louis flexed so hard in this video MY shirt ripped.
I heard the earth rumble from the other side of the planet when he flexed. 😊😁
Strange... my pants ripped.
@@integerofdoom69 🤣
@FatHead1979 I was going to add more context but I feel it's better this way.
@@integerofdoom69 LMAO, I think you're initial comment was already wonderfully 'illustrative' 🤣
I found Mend it Mark through your video a few days ago. His delivery is so enchanting, I watched a full 40m tape deck repair with intrigue. I don't even overly care about the topic, but his videos are worth checking out 100%
Mark's videos are absolutely worth watching. He is not only extremely knowledgeable, but his workmanship and attention to to detail are amazing.
He's passionate about what he does and it comes through the video.
I don't usually like watching Repair videos, unless I'm repairing something, He is clearly very good at presenting, and teaching you about the repair. Hat's off to the guy. I would sub, but my occasional watch would likely hurt more than help.
Old watcher of mark here; he‘s just brilliantly entertaining 😂👌 nearly all videos watched
If you like watching quality work, Mark has quite a suite of excellent videos to watch.
Glad you’re taking the time to re upload this video in respect to Mend It Mark and the entire self repair community.
This repair video was a joy to watch. Mark's a fantastic teacher and he was nothing but gentle on this product, fixing the issue and going above and beyond to restore it to good-as-new condition.
As others have said, there's a lot of mud you could sling at this for its price tag, but Mark was very much above that and focused on the job. Repair community strong 💪
Some say... that Mark would take an HP laptop over this... 🙃🤣
This chap seems like an outstanding individual of good cheer and fine character. What a pleasant man. I am so sorry that he ever had to deal with the fear of having a video taken down, and good on you Louis for standing up for a fellow repairman. I wish I could buy you both a beer.
I still don’t understand why Mark’s channel doesn’t have more subs. I’ve been watching his channel for years. It’s truly exceptional!
It's quite a niche topic.
I guess he will now!!!!
Why? Let's guess... not screaming lungs out, not showing flesh and curves much, not "selling" BS, "entertainment" and stuff...
youtube is tilted, that's why.
He never came up on my radar until this debacle, I like watching retro computer repairs but a couple of my subscribed channels have also done some audio and TV stuff so Mark has now got another subscriber here.
Thanks for stepping in to this Louis. Mark is a great chap, he's knowledgeable, skilful, modest and honest. We must not allow anyone to take advantage of him.
Exactly.
What an absolutely fantastic video by Mend It Mark (and of course Louis is always awesome). I can't believe he kept bringing out trick after trick, solving problems on-the-fly. Missing pad? Copper rivet! Broken screw? Blowtorch/screwdriver! Glue overage? Scouring pad! Broken plastic crack? Black wax! Bent threaded pipe? Chop cut and band sander! Near the end, when he was going to glue the felt back to the bottom, I half expected him to say "so here I'm boiling some horse hooves ..." as he is just so darn resourceful. Consider me subscribed, Mark.
You have a shed load of awesome repairs ahead of you, if he can't find a knob he will turn one on his lathe !
It's just fantastic to see so many people standing up for Mark. This is what happens when you try to bully people Tom; I hope you have learned your lesson.
Holy crap. Mend It Mark _knows_ what he's doing. I'm subbing to his channel.
I just did!
I can’t believe I just spent 45 minutes glued to a video of someone repairing something I know nothing about. (Initially, I just started playing it to contribute to the Streisand effect, but it was genuinely interesting.)
he has a very unique and entertaining way of presenting electronical stuff
I can’t believe I just watched it for the 3rd time.
Same with me.
Same here. I _never_ would have watched this video to completion if it weren’t for the abuse this poor guy took.
Same here.
I've never heard of Tom Evans Audio, but if I ever do in the future, I'll know to stay well clear. Thanks Mend it Mark.
I saw Mend it Marks response video the other day and wondered what was going on but the video is back up so I guess common sense prevailed! So glad I found the Mend it Mark channel the guy is outrageously skilled in the repair field! From machining new parts to rewinding tiny motors it’s one of my favourites! He’s also got a good sense of humour!👌🏼😊
I never heard of Tom Evans or Mark. Now, Mark is one of my favorite people and I have been suggesting his channel to like-minded friends. Also, I do not like Tom Evans and will ensure I never spend a single pence that would end up in his pocket. Thank you, Louis.
Nothing about that amp screams "quality" on the inside. Plastic stand-offs, scratched off components, and re-purposed blank PCB's used as grounding plates (although yes, it does the job). @MendItMark is awesome. A one-man army when it comes to repairs! Thank you Louis for supporting him!!!
Not to mention the horrid plastic panel Mark mended. It should not have had any cracks in it. Id expect PCB or resin at those prices. Absurd
@@kompst_tu He could've fashioned the entire case out of nickel-plated silver, and realistically, actual cost still wouldn't have exceeded £25k!
I'm not saying it's worth £25k but it's the time it takes to measure and match all the components for the least amount of noise. Plus it's hand built.
Being delicate or bulletproof doesn't really matter and audiophiles don't really care 99% of the time because it just sits on a shelf.
Value is subjective with audio equipment.
The circuit design side seems to be ok, there is nothing really wrong with that kind of design choice to break it up to million boards but.. that is DIY kit stuff, not high end 20k stuff... DIY raiser pins when you can order those in neat packages, using PCBs for ground planes...
For 20k i except custom machined brass ground plate that is engraved on top of each tower of boards, proper shelfs where each board slides in with end connectors, thicker wires connecting power around the board and proper wire management etc. You would maybe be ok charging 1k for that, it is still lot of manual labor but... Having cardboard slits to make the freaking chassis fit.. dear lord, at 20k everything needs to fit in perfectly with a satisfying feel, precision machined to ridiculous tolerances. It still would not be money's worth when it comes to perceivable sound quality but at least the build quality would match the sticker.
@@drivejapan6293 exactly, if they are actually measuring, balancing, matching, etc. the parts we have no way of knowing how many parts just don't make the cut and end up in the bin, could be testing hundreds to find their winner. The variability in commercial audio and video gear is absolutely wild. For instance, I buy 3 lenses and return 2 and thats at the "prime" multiple thousand dollar level. Its easy to see the difference. I do the same for mics and field recorders but I buy 5 and return the 4 worse ones, easy to hear the differences and see them via software, they are all over the place and god help you if you are trying to match to an existing kit. Some capacitors have tolerances in excess of 20%. Even 2% you'd be able to hear depending where its placed which isn't out of the ballpark (at all!) for an off the shelf electrolytic tantalum capacitor. If Evans is able to deliver an extremely consistent product, perhaps they can justify the price tag....using the DMCA to push around people is unjustifiable though.
I was in awe of his via repair with the rivet. I haven't seen that before! Then, he didn't even need it because it didn't have a wire in it. LOL Great video. This guy has answers to every problem he comes across. I loved it.
I paused the video and started looking for a place to order those rivets as soon as I saw it. Haven't found them yet, though.
@@RabidBadger_ Google "PCB via rivet"
I was impressed by the fact that he not only fixes the electronics, but also the whole chassis damage, too!
@@RabidBadger_ We gotta find those rivets!!! lol
@@ragnarok700 His workshop is a nerds wet dream man
I send you a virtual handshake Louis. Thank you for standing up for Mark.
This isn't just a repair video, where someone had done all the work prior ala "if you have this fault, replace that component". Clearly this is an educational video... Even I'm somewhat familiar with op-amps I learnt a thing or two, thanks Mark. And thank you Louis for reuploading it, I didn't had the chance to fully watch the original video.
Thank you for standing by another repair specialist, I subscribed to Marks channel, wishing you a happy and prosperous New year 😊😊
Mark goes above and beyond and does way more than just replace components. The one where he completely rewound the coil on a motor was outstanding! He often completely rebuilds casings and parts in his repairs. His skills and presentation are astounding. He is also not afraid to show when he makes mistakes which is brilliant.
I am glad you are supporting him.
There is something undeniably therapeutic about watching some one who actually knows what they are doing fixing a piece of electronic kit. Awesome that you have decided to support this gentleman who clearly does nothing else but sheer his knowledge and help people. It's hard to understand why that would ever be regarded as a crime.
Well, when you combine obscenely high prices, customers who are preconditioned not to question magical thinking & quackary (in this case, audiophiles), and products built using unicorn horns, angel feathers & pixie dust, the charlatans selling their collected magic smoke & snake oil really hate having their con exposed. *_The wizard must loudly insist you do not pull back the curtain!_*
They wouldn't feel so threatened if they were honest with what they were selling, and charging accordingly!
@@NightsReign Savage but true.
Although what Tom Evans did was intended to hurt him, the whole affair has greatly benefitted Mark in the long run. His channel subscriptions are way up, and I'm sure he has been flooded with business from people needing repairs and wanting them done correctly.
share*
I'll try to do my part too then!
@@robertjune1221 Oh absolutely, that Streissand Effect claims yet another W!
Like moths to a flame, these types always get drawn in overestimating their ability to control the narrative, they do their dirt thinking they can manage the information flow...somehow..., then quickly realize that *_opening_* Pandora's box was the easy part.
Mend it Mark reminds me of my dad. I spent many weekends and Wednesday afternoons watching him fixing and tinkering with electronic equipment. We spent an entire summer repairing a 21 inch Sony monitor. I remember him reviewing the equipment while he’s taking them apart, just like Mark does. “This is cleverly designed / the caps on this are cheap / Philips is trash”. My dad also made his own schematics, pixel-by-pixel on a DOS pc.
Bless you, Louis and the internet, for protecting Mark in this day and age.
😮 I must say that I have had many Philips products, and they have always been super durable, and of highest quality (per their price range). Much more so, than other more expensive brands.
Just want to insert my "5 cents".
🙂🇸🇪
Thank's for the re-upload, This is quite a nice video to watch.
I bet the German reseller HiFi-Studio Wittmann will have a hard time next year in May at the HighEnd Audio Munich 2025 😁
Mark did not only fix the electronics, but he even fixed the case. He is a master craftsman!
Man mend it mark did a very good job at not bashing the product, instead giving you all the info you need to come to your own conclusions. Very well done mark.
He didn't even suggest it was a bad design. I've only seen people saying that after the copyright thing. I looks handmade but Mend it Mark sort of praised the circuit.
@@jeffh8803 yeah, he did explain that tuning circuits can certainly be an expensive endeavour... but the asking price? make your own mind up. Audiofools pay whatever
A gentlemen was asked to repair a preamp, and that is what he did.
When Louis said he'd be mirroring an electronics repair video for another creator, I knew I would watch it, if only to play my part in the marvelous Streisand effect. I did not know, however, that I would be subjected to well over 45 minutes of Mend it Michelangelo illuminating Tom Evans' Last Judgment all over the ceiling of this Sistine Channel. That was marvelous. Mark is a virtuoso, and I would not have discovered his work if not for you, Louis.
Thanks to the both of you! I am going to go watch every last second of Mend it Mark's videos, now.
__
It was truly a multifaceted exhibition!
Where you saw a virtuoso painting a vast mural, I heard an elite composer's magnum opus. His masterful command of soldering iron & oscilloscope played the electronics beautifully!
Do you think he graduated from Joule-iard? 🧐
(I considered using "Mend it Mozart", but I couldn't compete with your "Mend it Michaelangelo". Bravo 👏🏽)
I can’t believe I just spent 45 minutes glued to a video of someone repairing something I know nothing about. (Initially, I just started playing it to contribute to the Streisand effect, but it was genuinely interesting.)
Great poetry, Sir.
I am a card carrying member of the St. Mark's Fanclub too despite of usually not giving a flying solder about electronics repair.
@@NightsReign a fellow of high culture, I see 🧐 Mozart would have been good, too. Bit disappointed I didn't come up with that, now, haha!
@@rileysimmons9886 Is it wrong of me that I'm crestfallen over the fact my dad joke didn't garner any labored groaning, or even a facepalm...? 😢
Mend It Mark sounds like a top bloke, I love him :)
Go watch him work it's a treat !
My sincere thanks for you doing this.
It could be argued that tom evans is very clever in noticing that audio types will cough up for gear based on its very high price. It could also be argued that the less you spend on the components inside the item the greater will be the profit. It could be argued that this would seem to be the limit of his ability to run a busines based on caring about anyone other than himself.
Thank you Louis for giving us a chance to watch again a very clever and decent man take us through this piece of equipment.
Mend it Mark is the most honest and jovial repairman I have ever encountered (after Louis of course :D)...
And don't forget, "My Mate VINCE" 😏
You could describe Louis as many things, I wouldn't say that "jovial" would be one of them. Manic, perhaps?
Well said !
Yeah, was gonna say - you can say a lot about Louis but “angry” seems more apt than ‘jovial’.
@@JasperJanssen But will deserved anger.
By opening this High End device the true quality of craftmanship and sense for quality of used materials and connections, which went into it, are clearly shown.
There are countries in this world, where you are done for good for the rest of your entrepreneur's life, after showing up with such a "product".
I think of Japan, Finland, Switzerland and Germany for example.
To call for 25.000£ for this piece of "art", is just ridiculous.
And I would even prefer a phono-pre-amp produced by a drunk chinese soldering apprentice to this one!
Thanks for your shown support and the help for your brother-in-arms!
Best regards,
JES👍🏻
Even the cheapest chinese amp has beautiful engineering in it. They often even photograph the insides for us to see.
What an attitude whiplash from Louis's "🔥TRY ME🔥" right into Mark's disarmingly pleasant and chipper introduction. I hope Mark keeps going for years. He has one of the best electronics repair channels along with Mr. Carlson's Lab.
I'm running out of popcorn for all these videos, can't wait to quietly sit and judge the build so harshly. Thx for the reupload.
Holy wow. I think Mark left it way better inside and out than how it started. And I mean brand new! Thanks for reposting!
THANK YOU LOUIS FOR STANDING UP FOR A GENIUS ❤
Once all the dust has settled, and Mend It Mark has settled into a comfy victory post-drama repair, and Louis has maybe even calmed down, I'm hoping to have The Mystery Of The Rolling Plains of DIP Switches explained to me.
The bank of DIP switches are common for MC/MM pickup amplifiers. They allow the user to adapt the resistance and capacitance that will load the pickup. Optimum energy transfer happens when the input impedance of an amplifier matches the output impedance of the signal source.
For stronger signals, that's normally not important so lots of audio equipment might have maybe 100 kohm input resistance to load very little.
But for extremely weak signal sources like a moving coil pickup, it really helps to try to match the amplifier input to the signal source because weak input sources means you need to be extra careful with noise - lots and lots of amplification is needed of the weak signal.
@@perwestermark8920 I really did enjoy Mark's explanation of the idea of averaging across several isolated amplifiers to cancel out the stochastic noise from the signal. Suddenly made the whole intention of the design clear. I've made three phonostages from various kits and never gotten one to be quiet enough to be acceptable. Maybe somebody should sell a kit version of this amp, that would put the boot to Tom Evans! :D
I tried pausing and looked for wires, I did not very clearly, but that might just be because of other stuff got in the way.
It looks like there might be two sets of wires coming from the input jacks, so it might be for input resistance adjustment like Per said.
There is a hint at 16:36 if you zoom in top right.
@petehurd5301 sqrt(N) is a common formula for noise in electronics. I did build a preamp with quad circuits many years ago, based on TL074 (or might have been the TL072 - was over 30 years ago). Started from a design in Elector.
Learned one thing about J-FET - make a voltage follower but forget to mount the input resistor to ground and you get a great radio receiver because of the huge input impedance of about 1 Tohm - 10^12 ohm...
I have been looking forward to this. As I didn’t get to see Marks original video.
Thank you for the contribution!
Did he say if all the money from this video would go to Mark?
Thank you for putting this back out. I was one of the original commenters and an engineer for over 30 years now. this reminded me of the kind of thing i built in my mum's kitchen for a few UK pounds as a teenager!
Dear Mr. Rossmann
I want to express my deepest respect for you, Sir. You channel your energy (and crazyness) to let some really valuable things happen to individuals, the community, the environment and even to youtube. To me (and I guess to many others as well) you are an inspiring person and I am very thankful for that.
Take care of yourself and your family; I wish you all the best!
Sincerely, G. Luther
Good on you, Louis. It's such a joy to see UA-camrs stand up for and stand with each other.
Thanks for the intro to Mark and his channel. I've watched a large number of his videos and have enjoyed every one of them.
I watched Marks original video before the takedown, but I'm going to watch it again here so UA-cam recommends it to as many people as possible. Appreciate your work Louis.
Mark is such a nice person. It was Techmoan that told me about his channel and i have watched everything he has uploaded since then. Mark derserves to be treated fair and i like what you do for him, because you have the knowledge to fight back. Thank You. Peter, Denmark.
Thats a great repair he did, even fixed the case and everything. Top notch quality. Will check him out
Mend it Mark is a really down to earth guy. Expert electronics guy, and needs way way more recognition for his efforts. I don't think he meant to expose the overpriced pre amp, but the pandoras box has been opened now. Hopefully he gets a ton of new subs out of the whole debacle. 😀
Mark’s channel is gold.
Educational and entertaining.
His fault finding and reverse engineering skills are first class.
I just want to appreciate the passion mark shows in his repair when he even polishes the top of the amp.
I watched this on Mark's channel before the takedown. Thank you for defending him and reposting this. There are so many small-minded, ignorant, litigious people out there. I always like his cheeky chuckling! I'm laughing at another chuckle as I write this, lol! You've got a new subscriber, Mr. Rossmann.
Anybody in there right mind would offer that man a job / for advice rather than giving him a copyright strike. The video by Mark is awesome and his level of skill is also quite remarkable. Thanks for the re-upload!
Putting aside the bunfiight and what may or may not happen next … you have to admire Mark and his quiet competence. I’m subscribing to his channel and I encourage everyone else to 👌
That intro was priceless. Thank you Louis, you're a treasure. Watching to the end for algorithm etc.
At the beginning of Mark's video and see Tom Evans using a cliche Intel parody logo when claiming copyright on Mark's video. Oh, the irony. The irony indeed.
Everything about it looks cheaply homemade. How he charges $25k for it is beyond me. Also, just my opinion, so sorry Tom Evans, you can't come at me!
I literally was watching this on his channel. As I was watching, the video came up with an error after 15 minutes in! I saw lots of other channels chipping in and helping Mark re-uploading this video and was delighted to finish watching it. Great that Louis uploaded it too!
Mend It Mark always cheers me up. He never becomes angry like we mere mortals.
Thank you for standing up for him.
Louis that is the single best threat I've ever heard in my life. You absolute legend. (btw I lost your Signal contact after we met at LTX and talked HiFI)
Holy sh*t how thorough is this, what I can only call, a true engineer!
Unlikely the amp manufacturer!
The hand drilled holes in the spare cheap copper clad 'shielding boards' are funny too - right next to the edge. I.e., useless. So many design errors in this product, it's a horror. Complexity magnified.
He never even gave the dipswitches a second look (at least not in the vid)
@@seheyt I wouldn't look at the dip-switches either: there's no label on them and they are unlikely to cause the fault.
If you want decent labelled and useful switches, the £250 Pro-Ject DS is good.
I think Tom was more worried that we would all see that the DIP switches don't seem to be connected to anything. Great repair Mark well worth watching and Thanks Louis you are a STAR.
I was wondering what the DIP switches did. Thought I'd missed the bit where they were mentioned. 😊
@@MrGeoffHiltonsame. They must be ‘proprietary’ 😅
Me too, when did that come up?
you can clearly see they terminate in a ribbon cable at the bottom of their board, which goes to one of the other boards. I won't defend this product, but lets not create more false information about it huh!
I also ask people to remember, this is HAND MADE, in the UK, which has minimum wage laws, and employer contribution rules. Given this box is hand assembled, whether or not we like the design, it would have taken a human (or team of humans) a very very long time to put this together. The cost of labour, parts, and R&D here, would legitimately cost thousands of UK pounds.
@@1061shrink1061 On two decent PCBs, one for each channel, these boards would not take long to populate. Add a trimmer pot to match the offsets and it's not a complex job. Add in an offline battery supply and it's probably £600 cost, sell for £2.5k.
The professionalism on display from Louis and Mark in this video is amazing. After all the drama I was expecting Mark to crap on the thing but he showed so much respect for a customer's equipment.
Díky!
Was just sent here from a german tech magazine. Mark is like the Bob Ross for electronics, I love it.
We need guys like you and Mark to keep the manufacturers honest! Good work. Keep it up.
You are what gives me hope for the right to repair movement! Keep fighting the good fight!
Well, my cat sat on my lap and watched about half of this, so I think you’re on the right track.
Originally watched it on Marks channel. And then on another channel . Now the algorithm took me to you. Seems AI is rebelling against its master and you are not being shadow banned. Loved the grand “FU” Tom. Made my morning. Subscribed. And an audiophile that repairs.
He listens to Khruangbin at the end, that's even more of an indicator that Mark is a top notch guy. I watched the whole thing. Such a dedication to his craft. Well done Mark. Thanks Louis as always!
Louis, thanks for fighting the good fight and standing up for what’s right. On the off chance you read this- I’m and EE who wants to build a line of products that are geared towards repair to help provide alternatives to the crap on the market today. Just not sure which products to start with (toaster, audio equipment, radios, etc.) Anything on your list that you’ve always wanted re-designed but made in a way that respects ownership?
* . *
Long shot, maybe printers? xD
Toasters are a good idea, I’ve always wanted a sturdy drip coffee maker with clever design too, those are hard to come by.
Please make a modern sunbeam radiant control toaster purely for my own selfish reasons
Actual answer probably Bluetooth speakers? They’re all about the same functionally but never have easily replaceable batteries or repairable speakers / electronics when they’re eventually dropped or broken
Oh tom, this video will be greatly enjoyed by millions. Thanks for bringining it into the limelight
Thank you Louis, the introduction you gave also happened to refuel my hope. Best of wishes to you, the Rossmann Repair Group and Mend it Mark
Don’t know how It took til just recently to find this channel, but this guy is my UA-cam hero. Your work and effort is top notch sir.
There was a time when schematics could be found inside purchased electronic items. When I bought a Moog Prodigy synthesizer in the early 80s, you got a full schematic in the user manual that came with the synth. I wish we could return to those days.
I had already seen the re-upload of the Internet archive version of the video but I really enjoyed watching this again.
Also did it to boost the algorithm.
However it is such a satisfying experience to watch Mark's attention to detail and craftsmanship.
Thank you Louis!!
Louis we need a Podcast with you and Mark! What a dynamic duo!
Legend! And Mark is a true professional who loves his work. For him to have reversed engineered and documented those circuits to that level of detail is not just next level, it’s on another planet.
Man I'm so pleased to hear the work you have been doing regarding right-to-repair. I did not know about this issue but it is something I feel VERY strongly about. 🙏
Thank you for using your strong principles to do good in the world and for having the courage to uphold those principles.
Tom Evans should issue an apology to Mend it Mark, and write to UA-cam to ask for the copyright strike to be removed and the original video to be restored.
He should also offer to pay Mend it Mark for creating the service manual and host a copy of it on his own website.
He should also stop selling over priced shit. But a fool & his money.......
Should have to pay for lost revenue, pain, and suffering.
Why? Rolex and Bentley do, Louis Vuitton does. Do only big corporations deserve to make money from our need to be admired?
Man, Mark is a gentleman. Im definitely gonna check out his channel now. Thank you Tom Evans for introducing me to his channel!
Marks work is majestic Tom should have been honoured that such class of technician repaired his work to such a high degree of perfection.
Tom did the excellent job promoting his shoddy work and products. Now the whole audiophile world is up do date, and up to the state of quality of the products he makes. 🎉🎉🎉 Cheerio Tom!
Thanks!