Jensen power 760s :Power Output: 60 watts RMS X 4 channels into 4-ohms @ < 1% THD+N Signal to Noise Ratio: 100dBA below reference (Reference: 1 watt, 4-ohms) Additional Power Output: 80 watts RMS X 4 channels into 2-ohms @ < 1% THD+N 155 watts RMS X 2 channels (Bridged Stereo) into 4-ohms @ < 1% THD+N The alternator out put is 55 amps.