@ 4 ohms the amp is 70x2....the one i gave u is the mono rms thats all the stuff on the amp 250 WRMS power rating 2" four layer dual voice coil Double stacked 60 ounce magnet High excursion suspension with flat spider Poly cone and foam surround with polymer sealant SPL 1W/1M,12" 89dB,15" 91dB Dual 4 Ohm Voice Coils