coilcraft is very nice. as i remember texas instruments are using them in their demo board. würth also has a high quality inductor at the same level of quality. pimping the output filter with lower inner resistance should give you better dynamic control and less distortion at higher output power. very good choice. regarding changing caps, i always look at the panasonic low esr types ike fc or fm series.
Ah, here is the answer, same as I plan to use nichicon fw 1000uf on supply. Infront caps use nichicon KA and signal use 10uf silmic rfs and try use my old stock Lt1364 opamp. Would be great for next replacing filter section, thanks for sharing
Thanks for the vid! How much cost was involved with those additional upgraded parts? I own 2 of the A07's and think they sound REALLY good as is. Did the upgrades take this into the stratosphere sonically or just a marginal improvement?
@@trungqn1890 hi thank you so much for the very kind and valuable advice Instead of removing completely it i was thinking to try to slow it down reducing its voltage supply with one of those very tiny and cheap regulators available on ebay From what I understand noise is due to the high rotational speed of the fan? maybe even just a right resistor in series can work? imhe Meanwell are very good products indeed
I bought from taobao, this link item.taobao.com/item.htm?spm=a1z0d.6639537/tb.1997196601.270.606d748486qF1d&id=595735056878 throught import service, im not sure you could buy it from China mainland at mouser has coilcraft brand but higher price www.mouser.com/ProductDetail/Coilcraft/VER2923-103KL?qs=zCSbvcPd3pYFGNEVSZE3iw%3D%3D
@@rodplanet5901 from my mind. 9 nichicon 10uf 50v dont make much different in SQ, but noise is lower. 4 wima mks and inductors make better quality. Sound more detail and more wider soundtage. But the bass is slightly lighter
@@trungqn1890 wow! Your upgrade makes a lot of sense considering that aiyima without an upgrade sounds very good already. I have one and I might do some upgrade soon. Your video helps a lot. Thank you.
@@radzia1010 when i purchased it from internet, the official store in my country does not sell inclued power supply for this amp, so i must find another
@@VinhNguyen-re8km 2 con opamp này có nhiệm vụ convert từ tín hiệu đơn sang tín hiệu vi sai để amp chạy btl, nên khi dùng những con như muse ko phát huy đc nhiều về chất âm. Tất nhiên nó cũng có chút khác biệt, ấm hơn chút nhưng cũng giảm độ trong so với 1612
Job is nicely done but do not think it's worth it. I got a Fosi Audio TB10D / BT30D PRO and already think it's sound better then the A07, out of the box.
i finished these modifies quite a while ago, at that time fosi didn't introduce tb10d. Now I am satisfied with my a07 and don't think I will buy another product soon
@@hunghung-ug2bb của mình nguyên bản chỉ là 1000uf 50v thôi. Của bạn chắc mới đc nâng lên rồi. Mình vẫn đang dùng 1000uf 63v dòng fw đây. Tụ lọc nguồn thì cơ bản ít ảnh hưởng chất âm
coilcraft is very nice. as i remember texas instruments are using them in their demo board.
würth also has a high quality inductor at the same level of quality.
pimping the output filter with lower inner resistance should give you better dynamic control and less distortion at higher output power. very good choice.
regarding changing caps, i always look at the panasonic low esr types ike fc or fm series.
Following this on ASR... Great work. Having trouble sourcing the parts.
Very useful video, thanks
is there good sound improvement after you upgraded the output inductor?
Ah, here is the answer, same as I plan to use nichicon fw 1000uf on supply. Infront caps use nichicon KA and signal use 10uf silmic rfs and try use my old stock Lt1364 opamp. Would be great for next replacing filter section, thanks for sharing
Thanks your suggets
Chemi-con caps are (arguably) better than Nichicon for power supply caps.
Very nice
Thanks for the vid! How much cost was involved with those additional upgraded parts? I own 2 of the A07's and think they sound REALLY good as is. Did the upgrades take this into the stratosphere sonically or just a marginal improvement?
I swapped op-amp with Burr-Brown OPA2604 op amp.. sound quality is way better than the already good one. A must try, you can always swap it back
Annndd after all this, fosi audio release a better amplifier for less money... Oops
Haha
Did it help?
Hi very nice mod indeed You say that you removed the smps fan Did you check any temperature? Thanks Gino
Yes, it operated normaly about 36-38*C. Because it self using a lm7812 to regulated down to 12v for the fan, this lm7812 very hot, i also removed it
@@trungqn1890 hi thank you so much for the very kind and valuable advice
Instead of removing completely it i was thinking to try to slow it down reducing its voltage supply with one of those very tiny and cheap regulators available on ebay
From what I understand noise is due to the high rotational speed of the fan?
maybe even just a right resistor in series can work?
imhe Meanwell are very good products indeed
so how dose it sound?
Please send part list.
Cool
Hi, nichicon FW 1000uf 63v x2 2.3$
nichicon FW 10uf 50v x9 2$
wima mks4 1uf 100v x4 3$
coilcraft OEM inductor 10uH x4 16$
can you please share the link where to buy the inductors? thanks
I bought from taobao, this link item.taobao.com/item.htm?spm=a1z0d.6639537/tb.1997196601.270.606d748486qF1d&id=595735056878
throught import service, im not sure you could buy it from China mainland
at mouser has coilcraft brand but higher price
www.mouser.com/ProductDetail/Coilcraft/VER2923-103KL?qs=zCSbvcPd3pYFGNEVSZE3iw%3D%3D
Hello. You almost upgraded everything. How much did it cost?
Hi, nichicon FW 1000uf 63v x2 2.3$
nichicon FW 10uf 50v x9 2$
wima mks4 1uf 100v x4 3$
coilcraft OEM inductor 10uH x4 16$
@@trungqn1890 thank you for your detailed and prompt reply. How would you rate the sound quality after the upgrade?
@@rodplanet5901 from my mind. 9 nichicon 10uf 50v dont make much different in SQ, but noise is lower. 4 wima mks and inductors make better quality. Sound more detail and more wider soundtage. But the bass is slightly lighter
@@trungqn1890 wow! Your upgrade makes a lot of sense considering that aiyima without an upgrade sounds very good already. I have one and I might do some upgrade soon. Your video helps a lot.
Thank you.
What about a better heat sink are any available?
I'm also searching, but none of them have fit box. The box fit with 30x20x90mm heatsink. i found some 40x20x100mm, must milling them down
Puedes describir los reemplazos que realizaste? Gracias
Hi, nichicon FW 1000uf 63v x2 2.3$
nichicon FW 10uf 50v x9 2$
wima mks4 1uf 100v x4 3$
coilcraft OEM inductor 10uH x4 16$
@@trungqn1890 I bought A07 this time, but mine has 2 units of 1500uf 50v. By the way, is there no problem if I replace it with 1000uf 63v?
@@blueguerrilla1027 No problem at all. but what voltage do you use? If it's less than 40v, it doesn't need to be replaced.
@@trungqn1890 Thank you for your answer. I'm using it for 24V. Once again, thank you.^^
Hi. At 0:08, why you rewired the Aux and RCA? Thanks
Do you mean 0:08 ?
@@trungqn1890 Yes, my bad, 0:08. Thanks
@@Hudsonlee1954 factory has changed it because 2 channel of aux was revered at previous versions of this amp, then they fix it
@@trungqn1890 Thanks for sharing 👍
@trungqn1890
What type of power supply You use? 19$ is cheaper than aiyima!
I using meanwell hrp-450-36. It is used item
@@trungqn1890 thanks but new cost almost 200$!. What is wrong with Aiyima genuine power supply?
@@radzia1010 when i purchased it from internet, the official store in my country does not sell inclued power supply for this amp, so i must find another
@@trungqn1890 I got the HRP-450-48, it's good stuff!
Now i need to check the rest of your mods, great stuff man!
Did the new parts cost more than the original amp?
power supply 19$
4 inductors 15$
4 wima caps 5$
all nichicon 5$ :D
@@trungqn1890 can you please share the link where to buy the inductors?
Con này để nút nguồn on mà tắt điện có bị bụp loa ko bác?
bụp rất nhỏ thôi bác
Cho mình hỏi thêm cái volume sử dụng cho đường jnput nào vậy
@@VinhNguyen-re8km 2 đường input đều chung vào 1 cả, bác cắm đường nào thì nó đều qua volume đó cả
@@trungqn1890 thanks bác, qua chiết áp làm giảm chất lượng âm nếu chjết áp k tốt
@@VinhNguyen-re8km nó chủ yếu ko đều 2 kênh thôi bác. Còn chất lượng âm qua điện trở ko ảnh hưởng nhiều
Т.е. чтобы стало лучше звучать, нужно просто заменить дешёвые компоненты на дороги... Карл
2con tụ tớ kéo dây ra ngoài là gì bác
Làm màu thêm thôi b. Ko có tác dụng đáng kể gì
Con này mới mua về chất âm sao ạ...
Cũng khá ok đó bác. Thêm tụ cảm thì thêm chi tiết và thoát tiếng hơn chút
@@trungqn1890 chi phí bác mod hết bn thế
@@x-pis3004 đắt nhất 4 cục cảm 360k. Còn lại tụ thì hơn trăm thôi
Full nguyên bộ giá sao bạn. Có bán ko
Cả nguồn cỡ 2tr đó b
@@trungqn1890 công suất bao nhiêu vậy bạn
@@phuocnguyen8774 chạy 38v thì tầm 150w 4ohm 1 kênh b
Sao bác ko nâng cấp 2 con opamp nhỉ?
Trong ảnh có 2 con muses02 đấy bác. Giờ thì e dùng 1612 rồi
@@trungqn1890 so sánh chất âm giữa 02 con này thế nào bác
@@VinhNguyen-re8km 2 con opamp này có nhiệm vụ convert từ tín hiệu đơn sang tín hiệu vi sai để amp chạy btl, nên khi dùng những con như muse ko phát huy đc nhiều về chất âm. Tất nhiên nó cũng có chút khác biệt, ấm hơn chút nhưng cũng giảm độ trong so với 1612
Job is nicely done but do not think it's worth it.
I got a Fosi Audio TB10D / BT30D PRO and already think it's sound better then the A07, out of the box.
i finished these modifies quite a while ago, at that time fosi didn't introduce tb10d. Now I am satisfied with my a07 and don't think I will buy another product soon
mấy cái linh kiện thay mới bạn mua ở đâu vậy. cái cuộn cảm thông số là bao nhiêu vậy bạn.
Tụ thì trên shopee có bán. Cuộn cảm mình mua taobao, 10uh bác ạ
@@trungqn1890 ban ơi. Mình mới tháo mạch ra. 2 con tụ to chỗ cuộn cảm là 1200uF mà. Bạn thay con 1000uf có sao ko ? Chất âm như thế nào ạ.
@@hunghung-ug2bb của mình nguyên bản chỉ là 1000uf 50v thôi. Của bạn chắc mới đc nâng lên rồi. Mình vẫn đang dùng 1000uf 63v dòng fw đây. Tụ lọc nguồn thì cơ bản ít ảnh hưởng chất âm
@@trungqn1890 uh. M đang nghe thấy cũng khá hay. Bass cũng mạnh. Treb thì hơi yếu. Tụ 1200 Mình tìm mua mà thấy ít quá. Chủ yếu 1000uf.
@@hunghung-ug2bb b thay 4 con tụ xuất wima sẽ thấy âm hay hơn