"As for your tone control thing, ALL Baxandall type tone controls (which
is most of them) operate within a feedback loop. However, I suspect you
mean within the power amp stage? If so, then you are thinking of 1980s
vintage Luxman amps. ALL Marantz amps employed separate tone control
circuits, with their own amplification and feedback systems. "

Yes I meant in the power amp stage. And I swear I saw a Marantz that was like that, in fact I probably got the print on the PC but I have alot of Marantz prints. I was actually surprised to see it, and it was the only one. I remember it was a lower end model but it still had the Marantz look.