Does anyone know what kind of amp this is?

The only letters i could find on it said ( gs design) It's an old ugly amp from like the early 90's ......that I found in my garage, but that thing hits freakin hard, harder than my ppi, I'm really curious and I've been looking, trying to find who makes it but I can't find anything.... If PaulD or anyone else has an Idea of what company might make it, please tell me...thanx guys

Pictures?

Yeah pics and more of a discription, any markings logos. ALso some newer amps look older.

I wanna say the GS line was by a company called redline ...... but that was a long time ago.

Thanx guys, after some more research I found out (gs design) later turned into (gs design redline) and after that they just got discontinued. I couldn't find much stuff about that brand, but according to a couple of people, gs was a really good brand around the late 80's and early 90's, yeah pretty long ago, but it's still damn good....Supposedly gs was made by the company that makes Autotek, Hifonics, and Crunch...