When it comes to music reproduction, personally I think the biggest limitation is speakers. I wouldn't doubt one amp could sound different than another, same as CD player, but the differences is minimal. IMO those people who fell into these kind of hype will most likely believe in the superiority of those "high end" interconnect and speaker cables that cost hundreds or thousands of dollars as well! LOL

But hey, it's your money, if it made you happier and you can afford all those high end stuff, then by all mean go for it. :-)