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In Reply to: RE: Opinions please: need recommendations for a Triode driver for a 2a3 posted by banpuku on January 16, 2017 at 16:54:36
45 or 71A. A 2A3 driver needs to deliver 20-22 Vrms at low output impedance and distortion level same as, or better than 2A3. Few tubes can do it better than other DHT.
Follow Ups:
Its a two stage 2A3 amp ( thank goodness ) so the mu you suggest is WAY too low.
Your suggestion is OK, but it assumes a three stage amp.
Jeff Medwin
Jeff:
Your moniker suggests you should love 71A or 45 as drivers :-)
The purpose of the driver is to provide undistorted voltage swing of high amplitude. Voltage gain can be, and should be done in the preceding cascades.
6H30 or 6N6P have same plate resistance, higher mu, higher plate voltage rating, and excellent linearity. They might be the best choice if one is not crazy about DHT like yours truly.
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