Check the listing for details. Kicker CX1200.1 1200-Watt Class-D Mono Subwoofer Amplifier. Condition: Excellent - Refurbished. Listed at 287.80 USD. Electronic Express eBay Listing Description Kicker 1200-Watt Class D Monoblock Subwoofer Amplifier This mono CX-Series Amp is now one-ohm stable, giving you even more wiring options for your system! Using a Class-D power plant, the CXA1200.1 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 (not included). A powerful 12dB crossover and 24dB subsonic filter is included, letting you quickly tune your system to perfection. CX-Series 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! Use the full-range outputs to expand your system with other bass amps, or add a full-range amp to complete your system. This CX.1 Amplifier delivers as much as 1,200 watts into one bass channel. Specifications: RMS Power: @ 14.4V, 4Ω mono, ≤ 1% THD+N: 600W x 1 @ 14.4V, 2Ω mono, ≤ 1% THD+N: 1200W x 1 Frequency Response ± 1dB: 25Hz–200Hz Signal-to-Noise Ratio: 95dB Input Sensitivity: Low Level: 125mV–5V High Level: 1V–40V Active Crossover: Variable Lo-pass 50Hz–200Hz, 12dB/octave Bass Boost: Variable 0–6dB @ 40Hz Subsonic Filter: 25Hz, 24dB/octave Remote Bass: Yes [sold separately] Dimensions (HxWxL): 2-3/8" x 6-3/4" x 12"