Pioneer GM-DX874 Class D 4-Channel Bridgeable Amplifier

Pioneer GM-DX874: Big Power, Small Size

“Hi-Res” audio enthusiasts, delight — the Pioneer GM-DX874 is a “Hi-Res” compatible 4-channel amplifier designed for premium sound lovers.

An amplifier shouldn’t take up too much space, especially in your car. The GM-DX874 might just be what you’re looking for. It combines a 1-Ohm stable circuit, installation flexibility, and superior high-power output, all partnered with “Hi-Res” certification — perfect for those who want only the best!

Speak to your nearest Authorized Pioneer TS-Z Dealer today for more information.

“HI-RES” Compatible
Pioneer’s GM-DX874 Class-D digital amplifier is equipped with high-quality sound components and tuning. It's compatible with “Hi-Resolution” audio, delivering the highest quality sound reproduction — the perfect partner to Pioneer’s exclusive TS-Z Series speaker range!
The product with the Hi-Res AUDIO logo conforms to the High-Resolution Audio standard defined by the Japan Audio Society. The logo is used under license from the Japan Audio Society.

Big Power, Small Size
Pioneer’s extra-efficient Class-D digital amplifiers offer a dramatic improvement in power output, yet are 50% smaller than current GM-Series Class-AB amplifiers. This compact size makes them more versatile for installation without compromising performance.

Improved Circuit Design
To prevent circuit shutdown, Pioneer’s “Protection Control System” senses internal temperature and automatically adjusts the input level. This stable, durable circuitry supports 1Ω connection, enhancing flexibility when connecting multiple subwoofers.

Variable Low Pass & High Pass Filter
For extra flexibility, variable LPF and HPF allow for more adjustable audio frequencies based on subwoofer characteristics and personal preferences. Both filters are adjustable from 40 Hz to 500 Hz.

Speaker Level Inputs
What, you don’t own a Pioneer head unit? No problem! Speaker level inputs allow you to connect your OEM unit (or any unit lacking RCA-type inputs) without needing add-on adapters. This means quicker installation, cost savings, and a Pioneer amp powering your ride.

Features:

• “Hi-Res” Certified Amplifier
• Compact Design for Versatile Installation
• Perfect Match for Pioneer TS-Z Series “Hi-Res” Certified Speakers

Specifications:
General

• RCA Inputs: 4-CH (Gold Plated)
• Amplifier Class: Class-D
• Hi-Res Certified: Yes
• Bridgeable: Yes
• Warranty: 1 Year
• Speaker Level Input: Yes
• Fuse Rating: 30A × 2
• Bass Boost Remote: Yes
• Automatic Signal Sensing & Turn-On: Yes
• Hi-Volt Input Level Control: 200 mV to 6.5 V
• Terminal Type: Block
• Load Impedance Allowance (Ohms): 1 to 8
• Protection Control System: Yes
• Dimensions: 252 mm (W) × 60 mm (H) × 215 mm (D)
• Power
  RMS Output @ 1Ω: 125W × 4
• RMS Output @ 2Ω: 150W × 4
• RMS Output @ 4Ω: 100W × 4
• RMS Output - Bridged @ 4Ω: 300W × 2
• Audio Adjustments
  Low-Pass Crossover Frequency: 40 Hz
• Low-Pass Slope: -12 dB/octave
• High-Pass Crossover Frequency: 500 Hz
• Bass Boost Frequency: 50 Hz
• Bass Boost Level: 0 dB to 18 dB

Audio Specifications

• Frequency Response: 10 Hz – 50 kHz
• Total Harmonic Distortion (THD): < 0.5% (100 Hz)
• Signal-to-Noise Ratio: > 95 dB