Pioneer GM-DX874 Class FD 4-Channel Bridgeable Amplifier with Gold-plated RCA Terminals, Hi-Res Audio

Big Power, Small Size Pioneer’s extra-efficient Class-FD amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller than the current GM-Series Class-AB amplifiers. That makes them more versatile in terms of installation as well as performance. Improved Circuit Design To prevent circuit shutdown, Pioneer's digital amplifier circuit "Protection Control System" senses its internal temperature and automatically moderates input level accordingly. Stable, durable circuitry lessens the risk of high input power for the unit to achieve 1 Ω connection. This design enhances the flexibility to connect multiple subwoofers to a system. Variable Low-Pass and High-Pass Filter For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. The GM-DX874 LPF is adjustable from 40 Hz to 500 Hz. Product highlights: 4-channel car amplifier 100 watts RMS x 4 at 4 ohms (150 watts RMS x 4 at 2 ohms) 125 watts RMS x 4 at 1 ohm 300 watts RMS x 2 bridged at 4 ohms (250 watts RMS x 2 bridged at 2 ohms) CTA-2006 compliant full-range Class D amp technology frequency response: 10-50,000 Hz (Hi-Res capable) variable high- and low-pass filters (40-500 Hz, 12 dB per octave) More Features: wired remote controls variable bass boost (0-18 dB at 50 Hz) preamp inputs and outputs gold-plated RCA connections speaker-level inputs via supplied RCA-type adapters signal-sensing turn-on with speaker-level inputs wiring and hardware not included with amplifier 4-gauge power and ground leads recommended