The Infinity Beta Digital 300 is a class D Subwoofer amp, and offers the following power output... 300 Watts x 2 @ 4 ohm 500 Watts x 2 @ 2 ohm 1000 Watts x 1 @ 4 ohm (bridged) Technical info... This amp has over current, short, temperature, input voltage low, and input voltage high circuit protection. It requires two 8 gauge power and ground cables. It has a variable 20 Hz to 80 Hz low pass filter. It has Dynamic Bass Optimizer (DBO) which is similar to a base boost used on other amplifiers. Power output: 2 x 300 watts @ 4 ohm, 2 x 500 watts @ 2 ohm, 1 x 1000 watts @ 4 ohm bridged.. Input sensitivity: 250 mV ~ 9 V. THD + Noise (4 ohms): 90 dB. Max. Current Draw: