4 x 150 Watts RMS at 4 ohm - Anti-Thump Turn - Power Protection Circuitry - Fuse : 10 A.4 x 300 Watts MAX at 4 ohm - On - Volume Gain Remote Control - Dimensions : 6.18''(L) x 3.50''(W) x 2.05''(H) Accessories:.4 x 500 Watts RMS at 2 ohm - Soft Turn On / Off - T.H.D S/N Ratio : > 95 dB - IPod / MP3 / Waterproof 3.5mm Stereo to RCA Adaptor.Electronic Crossover Network - Adjustable High / Low Level Inputs - Channel Separation : > 65 dB - Remote Control for Volume Gain.2 Ohm Stereo Stable - RCA Line Input - Frequency Response : 10 - 40K Hz Get high quality audio amplification on your boat or other marine vehicle with the Pyle PLMRMP4A. It includes a marine-ready, four-channel power amplifier pushing up to 1200 watts, a waterproof poly bag, and a waterproof stereo 3.5mm-to-RCA adaptor for plugging in virtually any audio source, including your iPod or other MP3 player. The amp is equipped with high and low level inputs, an electronic crossover network, plus power protection circuitry and anti-thump turn-on to keep your equipment secure. The included wired volume control easily mounts to your vehicle’s dashboard and provides an easy way to control your music while at the helm of your vessel. Color: silver.