you can find a used stetsom 7k2d for around 1000 or cheaper
and before all the little tards run around saying they will blow up, or fry your voicecoils
ive ran it for almost 2 years now, had 0 issues, clamped 6000w at 2 ohms at 10v, and this is the 1 ohm stable amp...
ran it at .175 ohm load rising to .5 at 10v and got 6000w, which was alittle weird, but a 6x world record holder is the one who clamped it... so i wasnt going to argue.