@evolvist My Benchmark AHB2 amp measures better than most of amps available, but it doesn't mean you will like the sound, not to mention cheap amps with fantastic specs achieved by deep negative feedback (bandwidth is one of them).
Bandwidth seems important since it is causing phase shift (delay) and improper harmonics summing, but many amps (for instance Lamm ML3) have very limited bandwidth ([email protected]) and are praised for extended airy highs. I suspect that phase delay is not that important since speakers in general accelerate phase. John Siau, an engineering director of Benchmark, says that there is nothing wrong in selecting amp that colors the sound (like warm vs natural) and it is just a personal preference. My system sounds very natural, while my brother's stereo sounds warm and less resolving. I like both.
Bandwidth seems important since it is causing phase shift (delay) and improper harmonics summing, but many amps (for instance Lamm ML3) have very limited bandwidth ([email protected]) and are praised for extended airy highs. I suspect that phase delay is not that important since speakers in general accelerate phase. John Siau, an engineering director of Benchmark, says that there is nothing wrong in selecting amp that colors the sound (like warm vs natural) and it is just a personal preference. My system sounds very natural, while my brother's stereo sounds warm and less resolving. I like both.