the upside-down will be corrected..... One of the coolest SS scores I have come across, Sunn does SS very well, as I own two different Sunn SS amps. This is their Twin Reverb in SS britches.. Amp is a 160 watts, I dimed the amp to get to the breakup, so the Weber Mass was needed. Using my California Man Tele... This amp has nuance up the wazzooo, great for funk, jazz, country, oh, and 70s rock. I think this amp will destroy any Jazz Chorus, and let you do some Nuge if inclined....... I play with an old 70s Phase 45 for a bit, might be my favorite Phase flavor right now, I also kick in a Behringer Phase 90 copy, that thing sounds great too..... Fun stuff in the bottom barrel of vintage gear.