mmats amps will do at least rated power and usually more. very solid amps. i dont think you're gonna find that amp for 300 though. they have the 3500.1 and 3500.05 for 750.
MMATS amps are KILLERS!!! low current draw but puts out BIG power I have the DHCx2200.1 the only bad thing i'v heard is the new poptop 1 arent being made as solid as the older 1(finned...black, white,nickel colors)