Our Hertz Marine Amplifiers use either 4 channel or 5 channel mode that can run on 65 watts power and peak at 210 watts power. Hertz Amps have power supplies that feature numerous winding transformers and a 24 dB adjustable lo-pass subwoofer filter. What separates these amplifiers from others on the market is its fully adjustable Lo-Pass, Hi-pass filters with 12dB/Oct. Hertz Marine Amplifiers also feature a Bass Boost to enhance the low frequency sound signals that are emitted from the amplifier. These Hertz Amplifiers are excellent additions to your sound system and if you will not be disappointed if you decide to go with these amps to enhance the speakers on your boat ride!