The A1200 mono amplifier puts out up to 275 watts RMS, and JL Audio's patented Class-AB amp circuitry delivers exceptional, natural sound with extremely low distortion. JL Audio amps use "differential-balanced inputs" to isolate the signal's ground from the chassis ground, reducing noise and making this amp compatible with almost any system, including most factory radios. Tunable high- and low-pass filters, and a bass boost give you precise control over your sound. The optional RBC-1 remote lets you dial in your bass from the comfort of your front seat. Details: mono full-range car amplifier at 14.4 volts: 175 watts RMS x 1 at 4 ohms (275 watts RMS x 1 at 2 ohms) at 12.5 volts: 120 watts RMS x 1 at 4 ohms (200 watts RMS x 1 at 2 ohms) differential-balanced inputs Advanced Rollback Protection System variable high- and low-pass filter (50-200 Hz, 12 dB/octave) switchable bass boost (0, 6 dB at 48 Hz) optional wired remote bass boost Absolute Symmetry™ Class-AB amplifier design MOSFET power and output stages preamp-level inputs speaker-level input with optional converter preamp outputs 8-gauge power and ground leads and a 25-amp fuse recommended — wiring and hardware not included with amplifier no onboard fuses — when installing multiple amps in a system, an additional 25-amp in-line fuse between the distribution block and the amplifier is recommended 10-5/16"W x 2-1/2"H x 9-1/4"D warranty: 2 years