CX-Series amps reach massive power levels thanks to an optimized circuit layout and the highest-grade internal components. Highly efficient heat sinks keep the amp cool with a sophisticated look. Mono amps offer an optional remote level control to adjust your bass right from the dash. CX-Series Mono Amps are now one-ohm stable, giving you even more power and wiring options for your system! using efficient Class-D power, the CXA400.1 features a variable bass boost with KickEQ, giving you as much as a 6dB of extra bump with a simple turn of the optional CXARC Remote Bass Controller. A powerful 12dB crossover and 24dB subsonic filter is included, letting you quickly tune your system to perfection. Use the full-range outputs to expand your system with other bass amps, or a full-range amp to complete your system. CX.1 Amplifiers accept up to 40 volts (400 watts) of speaker-level input signal. This kind of flexibility both makes line-out converters unnecessary and optimizes your sound quality at the same time! Expand your system with full-range, RCA pass-through outputs, then choose a "standard" mount of a cool vertical mount with the included hardware. CX.1 amps deliver as much as 400 watts into one bass channel. Features - Efficient Class-D Amplifier Three-second turn-on/off delay to eliminate unwanted interference Variable 12dB crossovers provides control to dial in perfect sound KickEQ 6dB variable bass boost for those additional low frequencies 24dB subsonic filter for protection from potentially damaging frequencies FIT+ (Fail-safe Integration Technology-PLUS) means it works with nearly every radio Accepts up to 40-volt input signal Small footprint for easier instllation Compatible with CXARC Remote Bass Control Vertical mounting hardware included for another unique look Input Sensitivity: 125mV–5V (Low Level) / 1V–40V (High Level) Signal-to-Noise Ratio: >95dB, a-weighted, re: rated power Subsonic Filter: 25Hz @24dB/octave Power (watts/ch) 4 Ohm: 150x1 Power (watts/ch) 2 Ohm: 300x1