Pioneer GM-DX874 4-Channel Amplifier

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$390.00

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Product Overview
The Pioneer GM-DX874 is a compact, high-efficiency 4-channel Class D amplifier designed to deliver powerful, detailed sound while fitting easily into tight installation spaces. Built with premium internal components and Hi-Res Audio certification, this amplifier delivers clean output and reliable performance for full-range speaker systems.

Power & Performance
Producing 100W RMS x4 @ 4Ω, up to 150W RMS x4 @ 2Ω, and 300W x2 @ 4Ω bridged, the GM-DX874 provides flexible power options for front and rear speakers or bridged setups. Rated at 1200W max power, it delivers strong output with controlled clarity.

Efficient Class D Design
Pioneer’s advanced Class D technology keeps the amplifier running cool and efficient while allowing for a compact chassis that fits in out-of-the-way mounting locations. The design supports stable operation and consistent performance during long listening sessions.

System Integration & Installation
Speaker-level inputs allow seamless integration with factory audio systems without RCA connections. The amplifier automatically detects high-level signals and turns on without requiring a separate remote turn-on wire.

Sound Tuning & Control
Built-in variable high-pass and low-pass filters allow precise tuning to match your vehicle’s acoustics, whether powering full-range speakers or bridged configurations. Hi-Res Audio support ensures extended high-frequency detail up to 50kHz.

Build Quality & Protection
Gold-plated RCA and power terminals enhance signal transfer and resist corrosion. Pioneer’s Protection Control System continuously monitors voltage, current, and temperature to ensure stable, reliable operation.

Key Features
4-Channel Full-Range Class D Amplifier
1200W Max Power Output
Hi-Res Audio Certified
Speaker-Level Input with Auto Turn-On
Variable HPF / LPF Crossovers
Compact, Cool-Running Design

Specifications
Power Output:
100W x4 @ 4Ω
150W x4 @ 2Ω
300W x2 @ 4Ω Bridged

Frequency Response: 10Hz – 50kHz
Signal-to-Noise Ratio: 75 dBA
THD: ≤1%
Crossover Range: 40Hz – 500Hz
Fuse Rating: 30A x2
Unit Weight: 5.5 lbs

What’s in the Box
GM-DX874 Amplifier
Bass Boost Remote & Cable
Speaker-Level to RCA Adapter
Installation Hardware
Owner’s Manual
1-Year Manufacturer Warranty

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All products offered are genuine, brand-new, and sourced through reliable suppliers. Quality and authenticity are always our priority.

Installation & Service Information

Professional installation is available at our shop for most products and services.

If you’re purchasing a product for installation or have questions about service availability, contact us to confirm details before booking or ordering.

Warranty, Returns & Support

All products are backed by manufacturer warranties where applicable.

Services are performed with care and professionalism.

If you have any concerns before or after your purchase, our support team is here to help.

Pioneer GM-DX874 4-Channel Amplifier

$390.00

Proven. Trusted. Reliable.

Why Trust Autosomnia

At Autosomnia, quality comes first. From genuine products to expert installations, we stand behind everything we sell and every service we perform—no shortcuts, no compromises. We treat every vehicle and every order with the same attention to detail we expect for our own.

What to Expect While Buying from Autosomnia

Genuine Products
Skilled in-house installations
Honest pricing & transparency
Reliable customer support

Any questions?

We’ve answered some of the most common ones below to help you shop with confidence. If you need anything else, our team is always here to help.

Are your products genuine and authentic?

Yes. All products sold by Autosomnia are 100% genuine and sourced from authorized manufacturers and trusted distributors. We never sell replicas or knockoffs.

Do your products come with a warranty?

Most products include a manufacturer-backed warranty. Warranty length and coverage vary by brand and product, and details are listed when applicable. Our team is happy to help if you have questions.

How fast is shipping or service scheduling?

Orders are typically processed within 1–2 business days. Shipping times vary based on location and product availability. For services, scheduling details will be confirmed after purchase.

What is your return and cancellation policy?

Eligible unused products may be returned within the specified return window. Installed products and services may have different policies due to labor and customization. For service cancellations or questions about returns, we recommend contacting us directly so we can assist you properly.

What detailing services do you offer?

We offer a full range of automotive detailing and protection services, including paint correction, ceramic coating, paint protection film (PPF), interior detailing, exterior detailing, vinyl wrap services, and more. Each service is performed in-house by experienced professionals using premium products.

Don't take our word for it...

Very impressed with Autosomnia. Clean install, professional service, and honest communication throughout the process. You can tell they actually care about quality and customer satisfaction. Highly recommended.

Michael R.
Queens, NY
Purchased a product online and also booked an in-store service. Both experiences were smooth and professional. The staff was knowledgeable and took the time to explain everything clearly.

Daniel P.
Brooklyn, NY
Great experience from start to finish. The product quality was exactly as described, and the team answered my questions quickly. Shipping was fast and everything arrived well packaged. Would definitely order again.

Jason L
Miami, Colorado