Prince's 'Musicology' album was on and the amps did not draw any attention to themselves, and apparently had no limits on the upper and lower bandwidth limits. It was just sending the electric signal untouched to the speakers and that's exactly what amps are supposed to do.

Name:  Densen B-200 , B-320   Amplifier.jpg
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The sound was as tight as a V1Z engine's bolts, while the sync was 'timeless'. The attack and decay of transients were like an acoustic performance; especially the lower end of the sound, which was pleasingly thumping. Also, the bass was too good.