Try disconnecting the REM wire from the amp and using a piece of wire to jump the REM to the + terminal and turn it on that way. See if it still does the static.
could be a defective amplifier with a bad circuit emitting RFI, or it could be a wiring issue causing the same problem. check the quality of your grounding point, check wire connections for snugness, remove the toggle from the REM line, and check REM connection @ the head unit too. all of these are possible causes.
not really. "sound storm" is a knock off of "Soundstream" trying to fool people into believing they're the same thing. It's total crap. This is why their amps cost $50-70 instead of ten times that.