Pioneer - GM-DX871 - 1-Channel Mono Class D Subwoofer Amplifier, 1600W Max, 800W RMS at 1 Ohm, Variable LPF, Wired Bass Remote - Black
Customers are saying
Customers often highlight the impressive sound quality and substantial power output of this amplifier, noting that it delivers excellent performance for its price point. Users also appreciate its compact size and straightforward installation process, which makes it a convenient choice for various setups. While the device is highly regarded for its bass response and value, some users have reported concerns regarding the unit overheating during extended use.
Turn Up the Bass
This amplifier features a wired bass control remote for optimal bass level adjustment according to your listening preferences and the characteristics of the music.
Big Power-Small Size
Pioneer’s extra-efficient Class-D amplifiers mark a dramatic improvement in power output capability, yet are 50% smaller than a typical Class AB amplifiers. That makes them more versatile in terms of installation as well as performance.
Packs a Punch
This mono amplifier is rated at a total of 1600 watts (max power) with high-current circuitry that provides all the power you need, delivering 300 watts RMS at 4 ohms, 500 watts RMS at 2 ohms, and up to 800 watts RMS at 1 ohm.
Auto Signal sensing and Turn-On
When used with an audio source such as an OEM source or a receiver without RCA output, the amplifier will activate as soon as an audio source is detected through the speaker level outputs.
High-Quality Affordable Design
Pioneer designed a high-quality power supply to sustain constant power requirements.
Gold Plated Terminals
These terminals maintain an accurate signal with increased electrical conductivity, prevent corrosion, and offer enhanced durability with excellent resistance to wear.
Pioneer’s TVC (Total Vibration Control)
Pioneer's TVC (Total Vibration Control) concept used in this amplifier not only increases the rigidity of the unit but also counteracts vibrations that affect sound quality at various points.
Protection Control System (PCS)
Pioneer’s PCS continuously monitors the input voltage, current consumption, and operating temperature to automatically adjust the amplifier’s output, ensuring operational stability during long listening sessions or when installed in high-temperature environments.
Independent Variable Filters
The amplifier features a variable low-pass filter (LPF) ranging from 10 Hz to 240 Hz, allowing precise adjustment of the audio bandwidth to optimize the acoustic performance of your subwoofer.
- Continuous Watts x Channel @ Ohms300 W RMS x 1-Channel - 4 OhmAmplifier ClassDNumber Of Channels2Bass BoostVariableBridgeableNo
Reviews
Rating 4.5 out of 5 stars with 281 reviews
- Sound Quality (82)
- Power (77)
- Size (19)
- Ease of use (15)
- Price (14)
- Heat (11)
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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The GM-DX871 is a 1-channel subwoofer amplifier that can deliver up to 800 watts RMS to your subwoofer, providing powerful bass with a strong and heavy beat. CTA-2006 compliant, this highly efficient Class D amplifier offers impressive, high-quality power in a compact chassis. The speaker-level inputs allow you to install this amp in a factory system without RCA connections. The built-in low-pass filter lets you optimize the sound for your vehicle's interior. Additionally, a wired bass control remote enables you to easily adjust the amount of bass from the subwoofer output. The GM-DX871 amplifier uses high-current, high-grade electronic components and gold-plated RCA connections to ensure maximum performance.

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The Pioneer GM-DX874 four-channel amplifier delivers 100 watts RMS at 4 ohms to each of your front and rear speakers for powerful music. CTA-2006 compliant, this highly efficient Class D technology provides impressive, high-quality power in a compact chassis. The frequency response extends up to 50,000 Hz, supporting crystal-clear Hi-Res Audio Certified playback. The GM-DX874 uses high-grade electronic components and gold-plated RCA connections to ensure maximum performance. You can configure your amplifier into 3-channel mode (4 ohm loads) to create a strong front soundstage (2x 75 watts RMS) with tight bass from the bridged subwoofer (1x 300 watts RMS). The speaker-level inputs allow you to install this amp in a factory system without RCA connections. Built-in high-pass and low-pass filters let you optimize the sound for your vehicle's interior. A wired bass control remote also lets you easily control the amount of bass from the subwoofer output (SW).

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| Pros for Pioneer - GM-DX871 - 1-Channel Mono Class D Subwoofer Amplifier, 1600W Max, 800W RMS at 1 Ohm, Variable LPF, Wired Bass Remote - Black | |||
|---|---|---|---|
| Sound Quality, Power, Size, Ease of use, Price | Power, Sound Quality, Size, Ease of use, Bass | Sound Quality, Power, Size, Installation Ease | Power, Sound Quality, Size, Ease of use, Price |
| Cons for Pioneer - GM-DX871 - 1-Channel Mono Class D Subwoofer Amplifier, 1600W Max, 800W RMS at 1 Ohm, Variable LPF, Wired Bass Remote - Black | |||
| Heat | Heat | Heat Dissipation | Heat |





































































