Don't you find it funny scientific knowledge, data, measurement instruments get us to the moon and back years ago yet people could not accept specs that can be displayed on accurate measurement instruments? Engineers who design, build, test and measure amps must be laughing eveyday at work.
Seriously when I spent big (by my standard) money on my Bryston, Denon universal, Chesky SACDs, I expected to get audible improvements but now I would concentrate on identifying high quality recordings (CD, SACD or BR regardless) by reading a lot of reviews and focus on saving up for speaker upgrade because I now know for sure that's the way to get the best sound quality improvements for the money. I have long given up on McIntosh but I still love their look.