I have a couple QSC series three 3800, one has a bad channel; a few bad outputs, so far. The amps have Toshiba 2SD424/2SB554. Plan to replace bad in pairs with MJ21193g/94g, don't want to couple an old Toshiba with a new ON semi. Three pairs of the ten (20 total per side), hmmmm..... Should I replace the entire channel with the On Semi combo and sell the good Toshiba's to recoup cost of new outputs? Would this help someone or should I stash 'em for future needs? Should I use the 95/96 instead? What would you do? Yes, you...there in the back. Thanks for any input on my outputs.