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It would be best to find an already vetted design

than to work the kinks out of the UA1 scheme. It would be hard to remove something like the global negative fb circuit since it has a big part in keeping the amp stable. If you replace the fixed fb resistor with a suitable variable one you can see or hear exactly what will happen as you slowly remove the fb. Or just go with a proven design. I think somebody mentioned the "odd watt" scheme which has been made by many people.


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  • It would be best to find an already vetted design - DAK 09:22:39 06/14/17 (0)

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