Not sure what others have said...but I've really like the Peachtree 220 and Rotel 15 series class D amps. Those 2 are very musical...and no reason to go back to A/B amps unless the configuration of a specific piece is something that you like. Personally...I found older Bel Canto and Channel Islands to be a bit cooler sounding...some folks might call them a little "clinical" I'd guess.