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RE: using cathode bias voltage for preamp tube heaters

I've mainly seen this done in less expensive 1960s tube integrated amps like some small Bogens where they used cathode current to supply DC to one or two 12AX7s in the phono stage. Based on the type of amps in which this was done, I'd say it was mainly a cost-cutting measure.


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  • RE: using cathode bias voltage for preamp tube heaters - Thermionic27609 12:41:43 07/24/14 (0)

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