Good day children of thunder. I would like to start a disscusion on the AMPEG solid state line of amps. SVT's BA's PF's B series and any other's I may have neglected to mention. They are based on the ON SEMI p240 and p9240 FET's from what I can tell. I have had 4 of them burn up on me, SVT-3 PRO, B2 rack, B2 combo(b3 circuit) and last night BA500. I run EB stingrays into them, and a AMPEG classic 410 for the cab. Nothing unusual IMHO. Is this a common problem, or am I doing something wrong. Is 4 amps over 10 years a common thing? I have put more miles on my mesa recto and Fender Bassman in the last 15 years without issue. I am open to hearing your experiences. thanks!