Pioneer GM-DX871
1-Channel – Class D, 1600 W Max Power – Digital Amplifier
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The Pioneer GM-DX871 is a powerful and compact Class D mono subwoofer amplifier designed to drive your car's bass with precision. Rated at a maximum of 1,600 watts, it is engineered for high efficiency and stability, even at a 1-ohm load. It features high-quality audio components, including gold-plated RCA terminals and high-current circuitry, to ensure clean, distortion-free sound.
Product Highlights
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Massive Bass Power: Capable of delivering up to 800 watts RMS at 1 ohm, providing enough juice for high-performance subwoofers.
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Efficient Class D Design: This technology allows for a chassis that is 50% smaller than traditional Class AB amplifiers, making it much easier to install in tight spaces like under seats or in small trunks.
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Total Vibration Control (TVC): Uses a specialized heat sink structure and optimized mounting points to suppress vibrations, protecting the internal circuitry and maintaining sound quality.
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Protection Control System (PCS): Continuously monitors temperature and input levels to prevent overheating and circuit shutdowns during long listening sessions.
Key Features
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Variable Low-Pass Filter: Adjustable from 40 Hz to 240 Hz, allowing you to fine-tune the audio frequency to match your specific subwoofer's characteristics.
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Wired Bass Remote: Includes a remote knob that lets you adjust the bass boost (0 to 18 dB at 50 Hz) directly from the driver's seat.
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Speaker-Level Inputs: Features automatic signal sensing, meaning you can integrate this amp into a factory system without needing to run a separate remote turn-on wire.
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High-End Build: Features a textured aluminum panel and a tough frame for durability, alongside gold-plated RCA terminals for better conductivity and corrosion resistance.
Technical Specifications
| Feature | Specification |
| Amplifier Class | Class D (Mono) |
| Max Power Output | 1,600 Watts |
| RMS Power (1-Ohm) | 800 Watts x 1 |
| RMS Power (2-Ohm) | 500 Watts x 1 |
| RMS Power (4-Ohm) | 300 Watts x 1 |
| Frequency Response | 10 Hz to 240 Hz |
| Total Harmonic Distortion | < 1% |
| Dimensions | 9-7/8" W x 2-3/8" H x 8-1/2" D |
What’s In The Box?
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(1) Pioneer GM-DX871 Mono Amplifier
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(1) Wired Bass Boost Remote Control (with cable)
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(1) Speaker Level to RCA Input Adapter
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(2) Spare 40-amp fuses (installed)
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Mounting hardware and owner's manual
What Others Are Saying
Eddie was great - SDCS installed a new head unit in my 2019 4Runner. He was honest in his opinions regarding the options I was considering. Pricing was also good - he was able to reuse some of my existing installation kit so I saved a bit of $$.Installation was clean and fast and he took the time to walk through the features before I left. Highly recommend!!
I had a great time at this shop! The staff really knows their stuff and took the time to explain the different options without pressure. Installation was quick, clean and professional. Everything looks factory and sounds amazing. The prices were fair and customer service was above and beyond. I highly recommend this place if you're looking for quality car audio and excellent service.
Those guys are really professional! I had a new Alpine floating head unit installed in my 2008 Mercedes, and it feels like a brand-new car. The installation was super clean. At first, the sound wasn’t the same as the factory stereo, but Kevin tuned it to be just as good—if not better—without adding any new amps. They even used my factory GPS antenna so I don’t have extra wires hanging out. On top of that, they matched the online price. Big thanks to Kevin and Eddie—highly recommended!
Kevin was awesome, he took his time and explained everything to me. I went in initially for a dash cam install and then decided to get a sub and amp installed as well. Both turned out great and will be returning if I need more work done.
Came In not knowing what to expect when suddenly my stereo stopped working. Spoke with Kevin in the front and after a VERY fast diagnosing they discovered my wiring was incorrect. After only about 45 minutes total being in the store I was on my way to the beach with a working stereo again! Thank you so much SDCARSTEREO
Highly recommend Kevin and the team at San Diego Car Stereo for any issues with aftermarket stereos. I bought a car with an aftermarket stereo and AC unit that wasn’t working properly—specifically, the heat wasn’t functioning due to an improper setup. I had several people look at it with no luck, and even the dealership basically refused to help because it was an aftermarket install. I came to Kevin and his team over the holidays feeling pretty defeated, but he was confident he could get the heat working before I headed back to a Colorado winter. Sure enough, he got it done.
FAQ
Do products purchased from San Diego Car Stereo come with a warranty?
Yes, all products come with a 1-year manufacturer warranty unless otherwise stated. This covers any defects excluding physical damage.
Are these products brand new?
Yes, every product we sell is 100% brand new, unused, and comes in original manufacturer packaging unless clearly marked otherwise.
Do you offer installation services?
Yes, we offer professional installation services at both of our San Diego Car Stereo locations. Our expert technicians have over 50 years of combined experience to install all of your car, marine, or offroad audio needs. Stop by or give us a call to schedule an appointment to get a quote in person.