Sundown Audio SAEv3 2500D 2500W Monoblock AmplifierTHIS IS A CLOSEOUT ITEM AND CARRIES NO MANUFACTURE WARRANTY. AMPLIFIERS ARE GUARANTEED AGAINST DOA ONLY. Features Digital Class D Mono Block Amplifier Dual MOS FET PWM Power Supply 1 Ohm Stable Load 12 dB Octave Variable Low Pass Filter 12 dB Octave Variable Subsonic Filter 4 Way Protection Circuit (Thermal, Voltage Speaker short and DC Offset) Wired Remote Control Specifications Input Sensitivity 6V Max 2500 x 1 @ 1 ohms RMS 1750 x 1 @ 2 ohms RMS