I'm looking for a source to get a pair of 3-500 ZG tubes, these must be a matched pair.
I am not finding very many locations that are offering a match pair.
Trying to find a new MP for under $300.
P.S. These are triodes and normally used as grounded grid amps. If I can find a pair that cheap, even if they are not the graphite one's "G". I can settle with that.