Specs: Amplifier, None, None, Audio line-in, Audio line-out, Speakers output, Remote Bass control, Speakers input, 45 Watt - 4 Ohm - THD 0.08 % - 12.5V DC - 4 channel(s), 75 Watt - 2 Ohm - THD 0.08 % - 12.5V DC - 4 channel(s), 90 Watt - 4 Ohm - THD 0.08 % - 12.5V DC - 2 channel(s), 150 Watt - 2 Ohm - THD 0.08 % - 12.5V DC - 2 channel(s)