Hifonics Zeus Elite 2500 Watt Mono 1 ohm stable, Class D mono subwoofer car audio amplifier. Features include an onboard electronic crossover with angled and illuminated terminals. Features & Benefits Hifonics D-Class Sub Frequency Design Simpatico coil design (SPC) Ultra-Fi Pulse Width Modulated MOSFET power supply LED power (blue) and protect (red) indicators Wired remote bass level control included Variable Bass Boost (0 to +12 dB bass boost at 45 Hz) Blue illuminated Hifonics badge Soft start sound function Mono channel operation Preamp RCA outputs to daisy chain multiple amps 4-Way System Protection circuitry (thermal, overload, DC, and speaker short protection) Dual 12 gauge speaker terminals simplify hookup Heavy duty aluminum alloy vented heatsink for maximum heat dissipation Silver nickel-plated RCA level inputs Silver nickel-plated screw terminals Input sensitivity: ?Variable level: 200mV-6V Variable low-pass filter (30-250 Hz, 24 dB/octave) Subsonic filter (15-35 Hz) Damping factor: >200 Frequency response: 15-250 Hz Subsonic filter (15-35 Hz) Damping factor: >200 Frequency response: 15-250 Hz Specifications POWER @ 1-OHM 1x2500W POWER @ 2-OHMS 1x1250W POWER @ 4-OHMS 1x675W BRIDGED @ 2-OHMS N/A BRIDGED @ 4-OHMS N/A FREQUENCY RESPONSE 10Hz-300Hz SIGNAL TO NOISE RATIO >95dB THD % <0.10% VARIABLE HI-PASS N/A VARIABLE LOW-PASS 40Hz-300Hz VARIABLE SUBSONIC FILTER 10Hz-40Hz 45HZ BASS BOOST 0~9dB AMPLIFIER FUSING 70Ax2 INPUT (RCA JACK) Yes