"Wayne"
This may be a little OT, but it still has to do with caps.

I've got a Fender '65 Twin thats got old GE paper electrolytics in the B+
circuit.
Most are 20uf @ 450 volts. I'm a relunctant to replace those with NOS for
the
obvious reasons the NOS probably are not gonna be an improvement over
whats in
there now.

BTW, I'm really not interested in changing the "sound" of the Twin. It's
a
great amp as is!!! Just wanting to clean up some of the hum, etc.



** Your hum may easily be due to the pre-amp tubes or defective grounding
of the heater supply.

Take it to an amp tech and don't make it a nightmare out of it for him by
messing with it first.




............ Phil