Lol! Be funny if you see this after all this time but I have had a pair for a decade or so and get this.. I know they guy that designed and built them. These are rare as hens teeth and about as good a pair of amps as you will ever find. My Buddy has a pair that he hasn't turned off purposely in 30 years. Mine have only been off for a week at most in the decade I've had them. Insanely complicated amps that few shops will take on if something goes wrong. Hopefully you kept them.