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Pioneer

1000W Class AB 4-Channel Car Amplifier

$140.00 $139.99 Save $0.01

SKU: GM-A6704

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INSTALL DIFFICULTY
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Moderate — 2–4 hours

Overview

The Pioneer GM-A6704 is a 4-channel car amplifier designed to upgrade your vehicle's audio system. It features a Class AB design for efficient and reliable performance, with minimized crossover distortion for clean, distortion-free output.

This amplifier offers a maximum power output of 1000 watts and 60 watts RMS per channel at 4 ohms, expandable to 190 watts RMS per channel in bridged mode. It includes variable high-pass and low-pass filters to control frequency ranges, allowing for tailored sound based on music type.
Show original supplier description
The Pioneer GM-A6704 is a 4-channel car amplifier engineered to significantly enhance your in-car audio experience. This Class AB amplifier balances efficiency and performance, ensuring optimal power usage without excessive heat generation. Its design minimizes crossover distortion, resulting in a clean and distortion-free audio output that preserves the integrity of your music. With a maximum power output of 1000 watts, this amplifier delivers dynamic and impactful sound reproduction. It provides 60 watts RMS per channel at 4 ohms, and can be bridged to deliver 190 watts RMS x 2 at 4 ohms. The GM-A6704 also features variable high-pass and low-pass filters, allowing you to precisely control the frequency range sent to your speakers. This adjustability (40-500 Hz for HPF/LPF) provides greater system flexibility and lets you tailor the sound to different music genres and your personal listening preferences. Key specifications include a frequency response of 10 Hz to 70 kHz and an S/N ratio greater than 95 dB. The amplifier supports speaker-level inputs and features automatic signal sensing for turn-on. Its dimensions are 356 mm x 60 mm x 215 mm, designed for installation flexibility within various car cabins.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandPioneer
Part NumberGM-A6704
CategoryMobile Electronics
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1M+ Enthusiasts
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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