AB3CX MIke Posted April 30, 2021 Share Posted April 30, 2021 About 5 months ago I placed an order with Decware for their Zen Tori amp. I was happy to know at the time that it was "self biasing", and the company has great reviews. However, 2 weeks ago learning that my unit was still months from being built, I took the plunge for a used MC-275 Mark VI available in my area. Of course it is not self biasing. I'm very happy with the way it sounds. Reading up on the topic of "self biasing" I learned that the cathode bias resistor used is just an approximation, and that the tubes gtherefore operate at lower power and the bias resistor generates heat, and that the circuit design is in many ways less effective than one with the bias manually set. Despite that, the Decware amps are quite respected. Wondering if the experts out there have any comments. Decware does make amps that have manually set biasing as well. Quote Link to comment Share on other sites More sharing options...
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