LEARN: MOST COMMON Room Acoustic Mistakes - Audiophile Setup

You're using the wrong hifi room acoustic panels. I show the CORRECT audiophile room acoustic product types for your mancave and listening room.
Which high end audio room acoustic treatment type is best for an audiophile? AGS. GIK. Others? I try several different kinds from high end audio diffusion to high end audio absorption and report on my findings.
I've been unable to get the best performance out of HiFi System due to fighting with room acoustic issues and have finally solved that!
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