Pioneer GM-DX874 High Resolution Class-FD 4-Channel Bridgeable Amplifier

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

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

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.

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

A high quality cosmetic only available on LIMITED models.

GENERAL

• RCA Inputs4-CH (Gold Plated)
• Amplifer ClassCLASS-D
• High Quality Sound Parts
• Hi-Res Certified
• Crossover TypeVariable HPF/LPF
• Bridgeable
• Warranty (must be purchased from an Authorized Pioneer Dealer)1 Year

SPECIFICATIONS

• Continuous Power (RMS) Output at 1 Ohm125W RMS x 4
• Continuous Power (RMS) Output at 2 Ohms150W RMS x 4
• Continuous Power (RMS) Output at 4 Ohms100W RMS x 4
• Continuous Power (RMS) Output – Bridged at 4 Ohms300W RMS x 2
• Frequency Response10 Hz to 50 kHz
• Total Harmonic Distortion (THD)< 0.05% (1 kHz)
• Signal-to-Noise (SN) Ratio> 95 dB
• Low-Pass Crossover Frequency40 Hz
• Low Pass Slope (dB/octave)-12dB
• High-Pass Crossover Frequency500 Hz
• Bass Boost Frequency50 Hz
• Bass Boost Level0 dB to 18 dB
• Bass Boost Remote
• Hi-Volt Input Level Control200 mV to 6.5 V
• Terminal TypeBlock
• Load Impedance Allowance (Ohms)1 to 8
• Protection Control System
• Dimensions10-3/8″ x 2-3/8″ x 7-7/8″