Crunch Power X Series Class A/B 4 Channel Amplifier, 1000 Watts 4 x 250 Watts @ 2 Ohms 4 x 125 Watts @ 4 Ohms 2 x 500 Watts @ 4 Ohms bridged (W x H x L) 9"e; x 2.25"e; x 10.25"e; Fuses: 2 x 30A Class A/B Frequency response: 10Hz - 22KHz THD: <0.5% Power terminals: 4 Ga. Speaker terminals: 12 Ga. Bass Boost Low voltage RCA Inputs High Level Inputs Adjustable Hi/Low Crossovers Exclusive Crunch SPEED-FET MOSFET components High energy Pulse Width Modulated Power Supply Heat Sink - Quick Thermal Dispersion Technology Nickel Plated Brass Connection Monitor overload and speaker short protection with lighted indicators on the amplifier end panel.