Today I took two old amps,a Classe Ca 100 and a old AMC 30 watt tube model into the little local shop I frequent. I wanted him to check them out and get a clean bill of health ( they’re techs too ) before I listed them for sale. We ended up listening to both my amps and the monster Mark Levinson amp he had running before I came in. Other equipment was, vintage rebuilt Luxman pre, Aurender N10 server ,a korean dac that they import and Usher speakers. We listened to all types of music changing out the amps ( Classe still sounds great ) and ultimately he ended up buying the two amps, fine by me saves the hassle of shipping heavy amps. So all in all we listened to some pretty good equipment, and when I walked out a there it was the first time out of dozens of times hanging out in his shop that I was able to say to myself “ wow my system sounds better “. It cost me a pretty good sum to able to say that , was it worth it? Oh hell ya😀!