Originally Posted By: ClubNeon
There is this (in)famous double-blind amplifier test, which shows a $6000 amp to sound same as a $200 amp: http://bruce.coppola.name/audio/Amp_Sound.pdf


Nice read, thanks! That is the type of experiment I've been dying to perform. I would make it even easier on the participants though. Personally, I would not reveal the makes/models prior to or during the test, and I'd simply ask them a) if they could hear a difference and b) which one they preferred. Of course I would need to A/B the same unit against itself as well and see how the results compared to the A/B of different units.