[R-390] Audio Gain Pots?

[Jacques Fortin]

Thanks Charles, I will check what is in my R-390s ASAP.
To Greg: just to remind you that the pots are a part of the V601B bias
system, so changing the value of those (for two 5K, in your case) will
change the tube operating conditions., despite this can be made to work as
designed by using a 2.5K (2k49) resistor in parallel.
I also believe that any audio taper pot (say 10K ones) can be fitted there
this way.
However, too high pot value can lead to high frequency loss due to the
cabling, but this can be checked.

Best regards,
Jacques, VE2JFE