SET Asylum

Single Ended Triodes (SETs), the ultimate tube lovers dream.

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RE: This long thread just tells me what commercial SETs aren't....

Posted by shane. on September 2, 2017 at 22:12:23:
"NO filament bias (a source of distortion injection)."

I wonder what is rationale for this comment?. Injection from where?.

Shunting the filament current through the bias resistor and reducing impedance from filament return wrt signal common, reduction in Rp as a result, and no longer need for Ck bypass in cathode circuit has resulted in a clear improvement to me.

Can I ask - have you built an all DHT amp, I suspect you have. But your comments confuse me.

If you decide to respond, please respond to the actual question in response from filament bias being a source of distortion injection.

Respectfully,
Shane