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Pioneer GM-A4704 520W Max Class AB Bridgeable 4-Channel Car Amplifier

  • Based on 283 reviews
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Availability: In Stock.
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Arrives Thursday, Oct 15
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Style: 4-Channel - 520W


Features

  • 4-Channel Class A/B Amp - Upgrade your car audio with a 4-channel amp for clearer sound. Customize your sound by connecting various speakers, balance audio between front and rear, and even add a subwoofer for extra bass.
  • Maximum Power Output Power up your music. The GM-A4704 cranks out a strong 520 watts of max power output creating dynamic and impactful sound reproduction, with 40 watts RMS x 4 at 4 ohms (130 watts RMS x2 in bridged mode).
  • Efficiency The Pioneer GM-A4704 boasts a Class AB design, balancing efficiency and performance, ensuring optimal power usage for a reliable audio experience without excessive heat generation.
  • Low Distortion With minimized crossover distortion, this amplifier guarantees a clean and distortion-free audio output, preserving the integrity of the source signal for high-quality sound reproduction.
  • Tone Control Designed with variable high and low-pass filters, control the range of frequencies the amplifier sends to its speakers to enhance the sound based on music type and genre. Tailor your listening experience and enjoy your ride.

Description

Elevate your in car audio experience with the Pioneer GM-A4704 4-channel Class A/B amplifier. With a maximum power output of 520 watts, it delivers dynamic and impactful sound that will enhance your ride. This Pioneer amplifier powers a pair of speakers with 40 watts RMS each, delivering a significant jump in power over your car radio alone. Boasting a Class A/B design, this car amplifier balances efficiency and performance, ensuring optimal power usage without excessive heat generation. Experience crystal-clear audio with minimized crossover distortion, preserving the integrity of the source signal for high-quality sound reproduction. Designed with variable high and low-pass filters, enhance your ride and tailor your listening experience based on the genre and type of music you’re listening to. With automatic signal sensing and turn-on, your amp will turn on when the receiver is turned on and automatically select the proper input signal mode. Transform your car audio experience with this compact yet powerful amplifier today, and immerse yourself in a world of elevated sound quality.

Item dimensions L x W x H: 8.5 x 12.88 x 2.38 inches


Voltage: 12 volts_of_direct_current


Manufacturer: Pioneer


Minimum Supply Voltage: 0.3 volts_of_direct_current


Mounting Type: Surface Mount


Voltage: 12 volts_of_direct_current


Minimum Supply Voltage: 0.3 volts_of_direct_current


Mounting Type: Surface Mount


Number of Channels: 4


Output Power: 520 watts


Package Type Name: Retail box


Supply Current: 43.3 A


Maximum Output Power: 520 watts


Item Dimensions: 8.5 x 12.88 x 2.38 inches


Specification Met: Certified Frustration-free


Manufacturer: Pioneer


Model: GM-A4704


Brand Name: PIONEER


Number of Items: 1


Warranty Description: 1 year


Unit Count: 1 Count


Item Highlight: Variable High-Pass Filter


Global Trade Identification Number: 05


UPC: 884938340205


Included Components: 4-Channel amplifier


Item Type Name: Car Amplifiers


Item Weight: 4.4 pounds


Part Number: GM-A4704


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Oct 15

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Love this amp
Style: 4-Channel - 520W
This is a solid amp. Plenty of power for my 94 vette!! And for the money a great value! I would definitely recommend this to others looking for a medium sized amp. Super easy to install.
Reviewed in the United States on July 8, 2026 by Todd Jedinak

  • Great choice
Style: 4-Channel - 520W
Great quality, after a bad Rockford this thing is such a relief to run cool and be reliable
Reviewed in the United States on June 13, 2026 by Amazon Customer

  • Good entry level amp
Style: 4-Channel - 520W
Still need to clean up my wire mess but works great powering 4 pioneer pro 6.5. Good price for entry level amp. Proper settings for your setup, and will work grrat. For this exact setup you need the right settings right or will overheat the amp. Not bulky. Otherwise, works great and would buy again
Reviewed in the United States on March 27, 2026 by #BISkuTluV43

  • Underated by a good amount.
Style: 4-Channel - 520W
Great amp for the money, exceeded rating by a good margine, running two 6.5 JBL 100w and a pioneer 10" sub for a garage box with a Android headunit, and it sounds great. Doesn't pull crazy current, about 25a at full tilt, and is clean at 138w per channel for the 6.5 and 248w for the sub. Definitely worth every penny. For all the reviews saying it gets hot or cuts off and on, set your gains correctly, get a cheap Oscope and set them so you are not clipping, I got mine to 16.75v on every channel with no clipping and it will play all day long and barely get warm. THE GAIN IS NOT A VOLUME KNOB! ... show more
Reviewed in the United States on June 21, 2020 by Charles W.

  • Thumps hard for only 30-amp fuse rating!
Style: 4-Channel - 520W
Very thrilled with this Pioneer GMA4704 car amp, thumps hard with my dual 12's in sealed box. Ridiculously loud bass that never clips while only drawing 30 amps of current! For comparison, my other Alpine amp (500 x 1) has TWO fuses on it, each rated at 40 amps.
Reviewed in the United States on January 21, 2024 by Kevin C

  • Clean sound
Style: 4-Channel - 520W
It has a very clean sound and is powerful enough to make my four 6 by 9s scream. Excellent.
Reviewed in the United States on July 31, 2024 by 74

  • Great Amp for the Price
Style: 4-Channel - 520W
I bought this as part of the replacement of my car stereo in my 2006 Monte Carlo. It was easy to install and sounds great with Kenwood speakers I also bought from Amazon. Sound is crisp and clear.
Reviewed in the United States on December 15, 2023 by gtannenb

  • Works as it should
Style: 4-Channel - 520W
It's larger than I would have liked, not gonna fit under seats, but it just barely fit under my dash like I had planned. Good enough for what I wanted does not get hot but I'm not driving it hard.
Reviewed in the United States on November 3, 2018 by E. Stamper

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