On Jul 24, 3:45*pm, "Rick" wrote:
...and of course you get way away from the Boatanchors philosophy! I think
it's preferable to discreetly unerrun the valve.

Oh, one could leave the filaments lit, and hide the little chip away back in
a corner under some wiring harness.
The receiver might last longer in the process !

But his tubes are metal so why light the filament? Of course, the s/c
solution is sacrilege - no way! I'd just switch the tubes to 6K6G's -
less heat and a nice glow and change the bias to AB (you don't need
class A P-P Hi-Fi quality!)
Cheers,
Roger