I have a Peavey Series 500 Dynabass head with an 18" cab (inverted speaker) . A drummer I used to play with left it with me. Said he had no use for it, and no room. He did mumble something about it being built in 1965. Does anyone know ANYTHING about this beast. It has decent sound (a very "warm" very "big" sound), a switch to go from bass to clear (2 separate amps?) for keyboard I suppose. I'm afraid to play it much, seems like almost an antique. I tried to post a couple of pictures, but the forum apparently won't allow me to do so.