DS18 GEN-800.4 800 Watts 4-Channels Multichannel Amplifier This High Power Amplifier Comes in a Black and Glossy Extruded Aluminum Chassis with Polished Heat Sink, Red Illuminating Logo, Temperature Display Voltage Meter, MOSFET PSU Transistors, and Fully Regulated PMW Power Supply This Amplifier Also Has Low/Subsonic Pass Crossovers, Pre-Amp Outputs, 200mV-6V Low Level Inputs, Direct 2 GA Power Terminals, 8GA Speaker Terminals, a Bass Remote, 2-OHM Stable in Stereo Mode, and 1-OHM Stable Class D With Power and Diagnostics LEDs, Unbalanced Inputs (RCAs) and Full-Range Line Outputs (RCAs) this Amplifier can bring you the RMS POWER at 4-OHMS: 1 X 1250W, RMS POWER at 2-OHMS: 1 X 2100W, RMS POWER at 1-OHM 3000W, RMS POWER at 4-OHMS BRIDGED: N/A Featuring Crossover and Switching capabilities: Variable Low Pass: 35 Hz - 250 Hz and Bass Boost: 0-18 dB at 45 Hz, a Signal to Noise Ratio of 90dB, a Frequency response of 10 Hz - 250 Hz, and a variable subsonic filter of 15 Hz - 35 Hz Lastly, this Amplifier Includes Tri-Mode Capability, Variable Input Level Controls, and a Four Way Protection Circuit: Thermal Protection, Over-Load Current Protection, Output Direct Current Protection, and Speaker Short Circuit Protection