Hey GrayBee! Liked that soundclip. You know that neck! If I ever find one of those (amps), I gotta have one. There was alot of re-branding going on back then and there were a lot of mail order catalog stuff in the mix as well. Harmony is an example of a company that never made an amp, but sold many models with their name on them. Gretsch amps were made by a company called Valco at one time, who was a supplier to many other brands such as Kay, Supro, Harmony, and maybe a bunch of others. Thats probably why it's hard to get info on much of the "older" stuff.