I had a Guyatone like that when I played in a Rockabilly group back in 1991, but then I included it with an amp that I had traded. I kicked my self for that move for years until I found this one on Kijiji. I found that Renown in a pawnshop last summer. Normally I'm a tube guy, but this one sounded so good that had to have it.
I do mods on some my guitars to make them sound better the way most of us mod our Mopars, lol