I love my class d, amp, PF500. I love it's tone, it has great volume. However, the type of shows I play, it's always di'd into house PA, so how my sound is relayed to the audience depends very much on the room acoustics and what the engineer does through his equipment. On stage my pf500 and cab gives my monitoring along with stage monitors, so in my opinion in the environment that I play in, not many people in the audience would know whether I'm playing a class d amp or not. Either way, I am totally happy with my amp and cab :-)