Amp sounds good but I would say it's only pushing about 1000-1300 watts MAX in my setup which includes a pretty weak alternator (65amp), but have 2 deep cycle optimas as well.. with my Tsunami 1100d I was hitting 144 db with my 15" sub, now i am only at 140.9 with this amp. I would say that if you have the money, look for a more efficient amplifier. If money is a factor, this amp is good for the price. Also seems like if you play it loud for a period of time say a half hour or longer, the power decreases. My Tsunami amp never did that. I loved my Tsunami amp, wish they didn't switch to wiring/accessories only - I'd rather have a new Tsunami amp.