Quoted from Nelson Pass and his F6 Owner's Manual:
http://www.firstwatt.com/pdf/prod_f6_man.pdfBesides measuring reasonably well, the best sounding amplifiers:
-tend to be simple
-are intrinsically linear
-run deep Class A
-use high quality components
The best sounding amplifiers also pay close attention to:
-the amount and scope of loop feedback
-the use of degeneration (the other feedback) and output loading
-the balance between types of feedback
-the amount and character of distortion harmonics vs level and frequency
-the appropriateness of gain devices for a given topology
Does this make you think of any other amplifiers...hmmm...racking my brain...right on the tip of my tongue...