Hey funny u should ask this as im in the same boat. I have the gs 4000 as far as i can remember, the 800w max version & I cant find anything on these amps. Digital displays & seem like good build quality .
those amps are built very well and the boards look cool to......they are red with red holdowns..(like a massive amps have).i have some pics of a 4000 at home...i will post pics later.....i have a 6000 to....
they remind me of a zed made amp.....but im not sure if zed made it.......