I'm using an ARC CA-50 integrated tube amp w/these speakers and get fabulous sound. The CA-50 uses 4 6550's and two 6922's; 45 watts total. I have been very curious about using SET amps, either mono's or stereo, w/these speakers too. I think they really sing w/tubes, so I'd stick w/another tube amp if I were you. Do you also use a sub? With my REL Storm III you can't tell these are not full range speakers, detailed, warm, punchy on jazz and acoustic, which is what I mainly listen to also.
