• Pioneer GM-D8704 - 4 Channel Amplifier


  • $435.00

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Class FD 4-Channel Bridgeable Amplifier

  • Compact Design for Versatile Installation Options
  • Refined Class FD Design Offers Extreme Efficiency and High-Quality Sound

An amplifier shouldn’t take up too much space, especially in your car. The GM-D8604 might just be what you’re looking for. It combines a 1-Ohm stable circuit, installation flexibility and a superior high-power output.


Big power, Small size

Pioneer’s 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. 

Variable low pass & 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.

Speaker level inputs

What, you DON’T own a Pioneer headunit? Well, we won’t hold it against you. In fact, we’ll even help you build onto your system. The GM-D8704’s speaker level inputs allow you to connect your OEM unit (or any unit that doesn’t have the typical RCA-type inputs) without having to buy add-on adapters. So, the install goes faster, you save money, and you’ve got a Pioneer amp in your vehicle.



Frequency Response: 10Hz to 50kHz

Wattage RMS (4Ω <=1% THD+N): 100W x 4

Wattage RMS (2Ω <=1% THD+N): 150W x 4

Wattage RMS Bridged(4Ω): 300W x 2

Total Harmonic Distortion (1 kHz, 4Ω): <0.05%

Signal-to-Noise ration (IHF-A Weighted): >95 dB 

Automatic Signal Sensing & Turn On: Yes

Crossover Type: Variable LPF/HPF

Crossover Frequency: 40Hz to 240Hz

Dimensions: 265mm x 60mm x 200mm