How to convert Class A/B amp to pure Class A

"Any advice out there?? "
I think you answered your own question, he would be able to tell you! I doubt he witholds much info just because you don't send it to him, he would know all the pitfalls you can encounter, and if this can be a simple enough conversion with the existing parts and no upgrades. Beyond that I am sure he will tell you "Yeah you can do this, this, and this and get it to the basic Class A operation" if in fact this is possible without changing anything.. Other than that I am also sure he could sell you the correct parts if you plan to push the entire upgrade yourself. Nobody else here can give you better advice on this subject for sure so call him up, hell even a 50 dollar consultation fee would be better getting it directly from him. He probably has or can write up a simple conversion technique or compatable schematics, tell you the milli amps to bias each channel too etc…

Good luck

That's a pretty good idea. I haven't asked Jon if he could give me instructions, because I know he does this for a living. Offering him a consultation fee would make me feel better and hopefully make it worth his time. I know I would get more satisfaction if I could do it myself. I'll drop him a line. No harm in "fishing around" for others' experience, though. Anyone out there made this conversion before? Thanks.

Wouldn't it make more sense to sell the amp and buy a class A amp? Tons of Thresholds, Sumos, Pass, Aragon and many more out there. You'll never get your money back out of this mod. And, that's if you are happy...

When you say you are handy, does that include working around high voltages, soldering, using a VOM. etc. I don't think this is a simple as swapping out a couple of parts. I could be wrong. also be sure your physical set up can handle the high heat load. FWIW, the 50 watt Forte Class A amps were honeys, but I think you can probably buy one for $500> Of course your "newly modded" one would presumably have all new caps which at the age of the Fortes are likely to require replacement on any used one you would buy.

You might get more help on: diyaudio.com