I haven’t read previous posts, but I saw “ Genzler Amplification” and thought I might chime in. I play upright and electric. Among my collection of too many amps is a Streamliner 900. I find myself using this head more often than not to power either one or two Bergantino Reference 112’s. I was looking for a “back-up” head recently and the GB is the only Class D that I really liked playing through. I’m sure there are many other good ones, but having cut my teeth on Ampeg,etc the Class D’s just didn’t have the warm punch I desired. My favorite non-tube was a GK 800 RB that I gave to one of my son’s a while back. Anyway, looking for a decent gigging amp I threw caution to the wind and without trying it out first, I ordered a Magellan 800. Wow! I’ve only had it a couple weeks, but I’m in LOVE with this amp! Unfortunately, I find a tone I like and stick with it (I know), but what a tone I have found. I’m doing a concert in a little over a week and an old friend who runs the sound system (for regional and National artists) is extremely proud to be able to provide an SVT/8-10’s. Though I love that beast, I’m going to turn him down and use my Magellan! It also sounds great with the Krivo magnetic on my URB, but when I play in a more intimate setting with my piezo (Yamahiko), I have a smaller amp I like(though the Magellan works well also). All in all, the Magellan is an extremely versatile amp that is warm, punchy, and articulate…it really doesn’t get any better than that for me. PS: I’ve been playing professionally since 1975 (fwiw)