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RE: Opinions please: need recommendations for a Triode driver for a 2a3

Posted by dave slagle on January 17, 2017 at 04:59:57:
Since you already have the octal socket and best guess is the triode 6C6 has a gain of about 20 the natural next step would be a 6J5 which is basically 1/2 a 6SN7. (and do search out a round plate as Sony6060 suggested)

The key point here is selecting a tube with the proper amount of gain to avoid a hair trigger volume control and the horrible possibility of not being able to turn it up to 11. The major factor here is to let us know how much voltage you can provide the grid of the input tube. If it is 2V like a typical source / passive combo you will be right at the edge of enough gain but since that is where you are now it seems like a safe bet.

For some odd reason it has always been an "industry standard" to insist you need a linestage that puts out 20V coupled to an amp that needs less than a volt to get to full power. The solution to this odd mix has always been bragging about the precision attenuator in the linestage that is matched at -50dB for normal listening levels :-)

Other factors to make known are what you mean by battery filaments. As 91derlust said you show battery bias which is a whole different story. Also are you open to the possibility of changing sockets?

dave