RMS Power 1Ω 7,000 x 1 , RMS Power 2Ω 3,600 x 1 , RMS Power 4Ω 1,800 x 1 Built In Dual Fans, 0G Power and Ground Connections Variable 12dB High Pass, Low Pass, and Subsonic Crossovers Direct Short, Thermal, and Overload Circuits Protect Amplifier Dimensions 8.25" x 2.75" x 10.5"