I'm a big SoundStream fan but I dont care for there low end Korean made stuff. Its as good as any other (amp) brands low end stuff. There a good value but there really not the same SoundStream that gave them there rep for KickButt/CutAbove the others.
If just want to move some big air for small $, there good. I believe Bass amps are just as important as mids & highs. A good bass amp will control the woofer and give a fast tight punch! without sounding like the rolls of fat coming off the old girlfriend you keep secret,lol.