A variac is absolutely the way to go if not sure about caps, you can reform then through a process of starting off with low voltage and increasing in steps. Also, I'd open up and visually check every cap, look for leakage, swelling.
Old SS amps
What are people's experiences with old SS amps. And I'm talking old like close to 20 years. I guess this can be called vintage(though to me it's yesterday.)
Either you bought it new and have had it that long or you bought it used.
Is buying it used a really bad idea even though it was owned by one person with no service issues? Like an old Pass.
I hear something about capacitators needing to be replaced. Should it be avoided like the plague? Am very interested in one but don't want to be stuck with a cat in a sack.
Thanks for any thoughts.