I am the happy owner of this amp, bought from TMR this year. I wondered why there was a set of silver knobs packaged with the amp and now I know! I like it with the black knobs.
I currently rotate it with a First Watt M2 and my Mcintosh MC275, but mainly use the MC275. These are powering Tannoy Cheviots. Mostly Qobuz or local file streams through a Chord Qutest but I have a Sota turntable, too.
Sometimes I find the Set120 does so much great that I forget that I'm not listening to the MC275. I found I prefer to use the Set120 with my Mcintosh c2300 preamp rather than without a preamp. The high end is a bit more relaxed and less etched with the tubes up front.
Anyways, I've been drooling over the new AVA amps released this year and heard this was the place for all things AVA. Think I might go for some monoblocks or a Set500. Still researching. Thanks to the forum for all the reviews to consider.