i work at best buy.....the new rockford amps arnt worth the $$ nothign what they used to be...alpine has a mono block 2 actually that are really nice one is 400RMS the other is 600RMS ....the kenwood 9102d is 850RMS its a beast of an amp ...specially when u put it with a fubar an the subs hits at 800RMS its nice...just my 2 cents