subs are actually 250watts each..gotta look at the rms rating not peak....so any decent amp that will do 500watts rms at 2ohm should suffice but dont go super cheapo and buy those 2000watt Boss amps. If your on a budget look at some used stuff from members or go with something from maxxsonics or audiopipe
Alpine MRP-500... keep it all in the family ... doesnt really matter if it's alpine. It just happens to be a decent budget amp that does 500 watts RMS at 2 ohms. I have the model right above it (MRX-m50) that also does 500 watts RMS on two ohms and it pounds my single Type-R 12" and I've had no problems with it so far. People who have never heard a truly amazing (not mine) system swear that I must have the best system ever hahah.