i have a amp that i am selling because i changed woofers and they need more power this amp is 600 rms at 4 ohms and u get 1200 rms at 2 ohms and at 1 ohm i had it on 4 10 inch kicker comps in my gn slams like crazy wasnt even turned up i am asking for 225 obo i paid 600 when i bought it 3 yrs ago and i still have instructions too