I doubt that the difference you heard from your NAD amp to other amps would be related to the speed, or slew rate. The slew rate difference in amplifiers is measured in micro seconds and is not likely to contain any audible difference. The power reserves you mentioned are very likely the reason though. NAD amps tended to be low continuous power with good head room and a nifty soft clipping circuit. This soft clipping circuit would keep the usual harshness associated with clipping to a minimum but you would still lose some of that “attack” we all like that comes from being able to actually cleanly reproduce the dynamic peak requested in the original source.

Edited by Ian (05/09/12 06:21 PM)
Ian Colquhoun
President & Chief Engineer