This is the Pioneer GM-D8704 4 Channel Car Stereo Amplifier.
Provides 4 x 100 Watts @ 4 Ohms
Unlock unbeatable sound with the Pioneer GM-D8704 4-Channel Amplifier! This powerful amp delivers 4-channels of premium, powerful sound to your setup. Enjoy unbeatable value and the best sound in town!
Pioneer GM-D8704 new extra-efficient Class-D digital 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 new 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, variable LPF and HPF make audio frequency more adjustable according to subwoofer characteristics and personal listening preferences. The GM-D8704 LPF and HPF are adjustable from 40 Hz to 500 Hz.