VM Audio Encore 1200W 1 Ohm Class D Amp Digital Mono Power Amplifier | ECD1200.1 Mono Power Subwoofer Car Amplifier - Hyper-Digital Class D Exclusive Robust High-Cycle DC-to-DC PWM Power Conversion Four-Stage Regulated Synergistic High Voltage Rail Performance Sophisticated Noise Free Single Star Ground System Strategic Side-to-Side Air Flow Thermal Cooling Chassis Ventilation Hyper-digital Class C Exclusive robust high-cycle DC-to-PC PWM power conversion 4-stage regulated synergistic high voltage rail performance Sophisticated noise-free single stat ground system Strategic side-to-side air flow thermal cooling chassis ventilation Low noise and distortion buffered line level input stage Ultra-low distortion multi-stage dynamic signal processing Second order linkwitz riley active crossover filter processing Efficient low heat high power switch-mode amplifier stage circuitry SelfGuard protection: Thermal, short-circuit, over-voltage, and DC offset Turn-on outflow limiting current (VM Audio exclusive) Unbalanced line level stereo inputs Direct non-fading line level stereo outputs Adjustable input signal gain control Continuous variable lowpass filter Active ultra-low subsonic lowpass filter Dedicated frequency selection bass boost control Continuous variable bass boost gain Versatile remote bass control adaptor included Independent power and protection status LEDs High quality nickel-plated brass, block speaker, and power terminals RMS power 4 ohms: 375W x 1 RMS power 2 ohms: 750W x 1 MAX power 1 ohm: 1500W x 1 Frequency response: 10Hz  180Hz Lowpass crossover: 40Hz  180Hz Subsonic: 0Hz  50Hz Bass boost frequency: 30Hz  80Hz Bass boost: 0dB  12dB Fuse: 20A x 3 Input voltage: 0.12V  4.2V Dimensions: 11.18 x 9.65 x 2.17 inches