@chronicle.. I have the S-500, a single chassis stereo amp. The other amps are a mono block and a mono block with a tube input stage. I have heard the mono blocks with the tube input stage, and they did sound warmer and smoother, but the system context was completely different. You might be able to get a home trial of this amp. Mike Kalellis designed and builds them. He is very talented, and a heck of a nice guy. Call and speak with him.
@chronicle... Sorry, my preamp is a Mcintosh C220 tube hybrid. Note that the mains are crossed over to a pair of subwoofers, first order, beginning at 80Hz, so the amp sees attenuated levels in the bottom two octaves. Lots of headroom.
There is a pair of Ohm Walsh 2000s for sale at the music room for a good price. Don’t see those around very often. Perfect match for a nice Class D amp.
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