How To Set the Gain On your Car Subwoofer Amplifier: Description: Hifonics ZEUS DELTA mono block amplifier delivers 1950 watts that features PWM MOSFET power supply for maximum current levels. Features: Compatible Vehicle Fitment: Universal Low Noise Preamplifier Circuit: Maximum low voltage signal from the source unit comes into the amplifier circuit with minimal distortion. RCA Inputs: Nickel plated high temperature impact resistant that allow for secure connections and is erosion resistant. Operation Mode: Mono only Crossover Type: Onboard electronic crossover Electronic Equalizer: Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. Class / Topology: Class D: High efficiency with big power in a small footprint. Output Device Technology: PWM MOSFET Power Supply: Stable power through the PC board with minimal heat generation. Heat Sink: Aluminum: Modern Design Hifonics Heat sink for Superior Heat Dissipation. Power Supply: Simpatico Coil Design: The dual coil Pulse Width Modulated power supply keeps voltage constant through the Ultra-Fi output devices. Connection Type: Secure molded connection terminal for all Power, Ground and Speaker connections. Angled for ease of access while creating a clean wire mangement profile. LED System Protection Circuitry Diagnostics: Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel. Bass Remote Included: Yes Auto Turn-On: DC SIGNAL SENSE: The DC SIGNAL SENSE switch will allow the amp to turn on when a signal is received on the RCA inputs, so an amplifier remote turn on wire is not needed to turn on the amplifier. This feature can also be turned off. Specifications: Amp Class: Class D Amp Total Channels: 1 Amp Max Power (watts): 1950 Amp Power @ 1 Ohm (ch x watts): 1 x 1950 Amp Power @ 2 Ohms (ch x watts): 1 x 975 Amp Power @ 4 Ohms (ch x watts): 1 x 450 Amp Mono Bridged @ 4 Ohms (ch x watts): N/A Amp Crossover: Variable Electronic 12dB Per Octave Amp Variable High Pass Crossover 12dB per Octave: N/A Amp Variable Low Pass Crossover 12dB per Octave: 50Hz-250Hz Amp Tone Control / Parametric EQ: Built-in bass control Amp Bass Boost: 0-12dB Amp Subsonic Filter: 15Hz-40Hz Amp Phase Shift: N/A Amp Variable Voltage: 0.2-6V Amp Frequency Response: 15Hz-250Hz Amp Total Harmonic Distortion (THD): < 0.1% Amp Speaker Level Audio Inputs: Yes Pre-amp Audio Outputs: N/A Amp Power Terminal 12v/GND: 4 AWG Amp Speaker Terminal Wire Gauge: 12 AWG Amp Fusing: External 100A Item Weight (lbs): 5.38 Item Length (in): 12.44 Item Width (in): 5.75 Item Height (in): 2.16 Color: Black