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