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Pioneer - 4-Channel Class D Amplifier - Black

Model: GM-DX874
SKU: 6321734
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Specifications
  • Continuous Watts x Channel @ Ohms
    100 W RMS x 4-Channel - 4 Ohm
    Amplifier Class
    D
    Number Of Channels
    2
    Bass Boost
    Variable
    Bridgeable
    Yes
  • Key Specs
    • Continuous Watts x Channel @ Ohms: 100 W RMS x 4-Channel - 4 Ohm
    • Amplifier Class: D (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
    • Number Of Channels: 2
    • Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
    • Bridgeable: true (Bridging an amplifier increases the power it supplies to the speaker(s).)
  • General
    • Brand: Pioneer
    • Model Number: GM-DX874
    • Product Name: 4-Channel Class D Amplifier
    • Color: Black
    • Mounting Hardware Included: true
  • Audio Power
    • Continuous Watts x Channel @ Ohms: 100 W RMS x 4-Channel - 4 Ohm
    • Watts Per Channel RMS: 125 watts
    • Amplifier Class: D (An amplifier's mode of operation, specifically the conditions in which its electrical current flows for the duration of an audio signal, determines its class. Each class has its strengths and weaknesses when it comes to power efficiency, levels of crossover distortion, and overall sound quality.)
  • Audio
    • Number Of Channels: 2
    • Bass Boost: Variable (Circuitry that boosts the bass response of the amplifier, improving audio reproduction enhancing the sound of low frequencies. Fixed boost means the level of bass response is preset, whereas variable boost allows the user to make adjustments.)
  • Features
    • Bridgeable: true (Bridging an amplifier increases the power it supplies to the speaker(s).)
    • Bluetooth Enabled: false (The device is capable of communicating with another device via Bluetooth, provided they are within the required range of each other. A Bluetooth-enabled device must also be the same Bluetooth version or higher than the accessory it is intended to pair with.)
    • Remote Control Included: Bass
    • Marine: false
  • Dimensions
    • Product Height: 4.44 inches (The out of box height of the item. Height is measured as the vertical distance from the bottom of the item to the top as it would be primarily used or placed.)
    • Product Width: 10.8 inches (The out of box width of the item. Width is measured as the horizontal distance from one side of the item to the other as it would be primarily used or placed.)
    • Product Depth: 12.96 inches (The out of box depth of the item. Depth is measured as the distance from the front of the item to the back as it would be primarily used or placed.)
    • Product Weight: 7.22 pounds (The out of box weight of the item.)
  • Warranty
    • Warranty - Parts: 1-year Limited Warranty from date of delivery. See Limited Warranty terms and conditions for further details.
    • Warranty - Labor: 1-year Limited Warranty from date of delivery. See Limited Warranty terms and conditions for further details.
  • Other
    • UPC: 884938421843

The Pioneer GM-DX874 four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers for powerful music. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out of the way spaces. The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback. Pioneer uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance. Speaker-level inputs allow you to install this amp in a factory system with no RCA connections. The amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, whether you're driving speakers or subs.

  • Aluminum Top Board: A high quality cosmetic feature only available on LIMITED models.
  • 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.
  • Variable Low-Pass Filter - 40 Hz to 500 Hz.: For extra flexibility, a variable LPF makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences.
  • Big Power-Small Size: Pioneer Class-D 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.
  • Protection Control System (PCS): Pioneer’s PCS continuously monitors the input voltage, current consumption, and operating temperature to automatically adjust the amplifier’s output to ensure operational stability during long listening sessions or when installed in high-temperature environments.
Whats Included
  • 4-Channel Amplifier
  • Two 30-amp ATO fuses (installed)
  • Bass Boost Remote Control
  • Bass Boost Remote Control Cable
  • Speaker Level to RCA Input Adapter
  • Installation Screws X 4
  • Wire Terminal Tool
  • Owner's manual (English/ French)
  • 1 Year Warranty Sheet

Q: Does this amplifier have a variable low-pass filter?

A: Yes, it has a variable LPF that makes audio frequency more adjustable according to subwoofer characteristics and personal listening preferences.

Q: What is the maximum frequency response of this Pioneer amplifier?

A: The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback.

Q: Does this amplifier have speaker-level inputs?

A: Yes, speaker-level inputs allow you to install this amp in a factory system with no RCA connections.

Q: How much power can this amplifier deliver to each speaker?

A: This Pioneer four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers.

Q: Why is this amplifier so compact?

A: Highly efficient Class D technology keeps this powerful amp running cool and allows for a compact chassis that fits in a lot of out-of-the-way spaces.

Q: What is the signal-to-noise ratio of this amplifier?

A: The signal-to-noise ratio is 95 decibels.

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The Pioneer GM-DX874 four-channel amplifier will deliver up to 150 watts RMS to each of your front and rear speakers for powerful music. Highly efficient Class D technology keeps this powerful amp running as cool as it looks, and allows for a compact chassis that fits in a lot of out of the way spaces. The frequency response of this amplifier stretches up to 50,000 Hz, for Hi-Res Audio Certified playback. Pioneer uses high-grade electronic parts and gold-plated RCA connections to ensure maximum performance. Speaker-level inputs allow you to install this amp in a factory system with no RCA connections. The amplifier switches its input mode automatically when it detects the high-level signal, eliminating the need to run a turn-on lead to your receiver or fuse box. Built-in high- and low-pass filters let you adjust the sound for your vehicle's interior, whether you're driving speakers or subs.

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Pros for Pioneer - 4-Channel Class D Amplifier - Black
Sound Quality, Power, Size, Installation EaseThere were no pros for this productSound Quality, Power, Size, Ease of use, PriceSound Quality, Power, Size, Ease of use, Installation
Cons for Pioneer - 4-Channel Class D Amplifier - Black
Heat DissipationThere were no cons for this productThere were no cons for this productHeat

Specs

Reviews

Customers are sayingCustomers have good things to say about the product's sound quality, power output, and ease of installation. Its size is also considered average for its price. However, a minor concern raised by some customers is that the amplifier tends to get warm.
This summary was generated by AI based on customer reviews.
  • Sound Quality (80)
  • Power (37)
  • Installation Ease (19)
  • Size (12)
  • Heat Dissipation (4)

Customer Images

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.

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