Sheesh guys, I retubed my MC275 Mk IV because of bad Chinese stock tubes as soon as I got it due to a problem. I’m using Genelex KT88s from the 60s NIB matched quad and rca 12at/ax7s they appear to be black plates. I’ve got 180 hours on all tubes now.
My MkIV has incredibly hard hitting tight bass, outstanding mids and the highs are amazing. I’m running the Mac new reissue C22 and driving University Sound 315C series 200s! With this tube compliment and the rest, I’d say there are few amps that could touch this one, whatever mark number they are!!
My MkIV has incredibly hard hitting tight bass, outstanding mids and the highs are amazing. I’m running the Mac new reissue C22 and driving University Sound 315C series 200s! With this tube compliment and the rest, I’d say there are few amps that could touch this one, whatever mark number they are!!