I seem to recall this being a pr20 or something like that. I don't really know. It's been years. The amp used 2a3 tubes which I recall being triodes. Not sure what it's worth but I want it gone. Come without tubes and while it did function before I took it apart it's sold as is with no clue as to it state of workabilty. I'm looking for 50 bucks. If that's too high make an offer . No shipping no PayPal. Local pickup in Rockaway NJ. Will consider trades but I have too much junk as it is.