Class FD 4-Channel Bridgeable Amplifier with Gold-plated RCA Terminals, Hi-Res Audio Capable, HQ Sound Parts and Wired Bass Boost Remote

  • 1,200 Watts Max Power
  • High Quality Textured Aluminum Panel and Tough Frame
  • Gold-plated RCA Terminals
  • Hi-Res Audio Capable
  • Bass Boost Remote included

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.

Pioneer Branded Electric Elements

Pioneer Branded Electric Elements

High quality elements provide high sound quality and stable power supply.

Gold Plated Terminals

Gold Plated Terminals

Gold plated terminals provide the ability to maintain an accurate signal with increased electrical conductivity, prevent corrosion and provide enhanced durability with excellent resistance against wear.

High Resolution ability

Hi-Res Audio

High Resolution ability provides a super high frequency playback over 40kHz, and a wide dynamic range. Even if the source is not Hi-Res, wide dynamic range provides a more detailed audio playback.

Aluminum Top Board

Aluminum Top Board

A high quality cosmetic only available on LIMITED models.


  • 4-CH (Gold Plated)
  • Variable HPF/LPF
  • 1 Year
  • 125W RMS x 4
  • 150W RMS x 4
  • 100W RMS x 4
  • 300W RMS x 2
  • 10 Hz to 50 kHz
  • < 0.05% (1 kHz)
  • > 95 dB
  • 40 Hz
  • -12dB
  • 500 Hz
  • 50 Hz
  • 0 dB to 18 dB
  • 200 mV to 6.5 V
  • Block
  • 1 to 8
  • 10-3/8" x 2-3/8" x 7-7/8"