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PIONEER

Pioneer GM-A4704 4-Channel Car Amplifier – 520W Max, Class AB, Bridgeable Design, Bridgeable, Variable high-Pass Filter

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Jan 27
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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 (DC)


Manufacturer: Pioneer


Minimum Supply Voltage: 0.3 Volts (DC)


Mounting Type: Surface Mount


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


Voltage: 12 Volts (DC)


Manufacturer: Pioneer


Minimum Supply Voltage: 0.3 Volts (DC)


Mounting Type: Surface Mount


Brand: PIONEER


Number of Channels: 4


Output Power: 520 Watts


Package Type Name: Retail box


Specification Met: Certified Frustration-free


Supply Current: 43.3 Amps


Global Trade Identification Number: 05


UPC: 884938340205


Product Dimensions: 8.5 x 12.88 x 2.38 inches


Item Weight: 4.4 pounds


Item model number: GM-A4704


Is Discontinued By Manufacturer: No


Connectivity technologies: RCA


Other display features: Wireless


Color: Black/red


Whats in the box: 4-Channel amplifier


Department: Pioneer


Date First Available: August 16, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jan 27

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

    • Decent price to run 1-15inch sub, let’s see if it works and hold up till I can upgrade
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Haven’t plugged it and set it up with my black diamond 15 inch subwoofer hopefully it’s enough power to get a good steady sound until I can upgrade
Reviewed in the United States on December 17, 2025 by Mathew Benson Mathew Benson
    • Fantastic Amplifier!!
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I love the power and performance of this amplifier. It fits nicely on the ledge in my trunk and looks very professional. I purchased this Pioneer Amplifier in August 2019 along with an in-dash Pioneer stereo, speakers, and a 10-inch subwoofer. I had it installed professionally at Best Buy, which I highly recommend. My entire system has performed flawlessly for just over five years. My Pioneer 4-channel amp is truly a game changer. ... show more
Reviewed in the United States on October 20, 2025 by David
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Great sound! Great quality! Worth every penny!
Reviewed in the United States on September 19, 2025 by Ricardo Gomez A
    • Powerful, clear-sounding and modestly-priced (12VDC power runs efficiently off Talentcell...)
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I hooked up my old PolkAudio TS25i (seems most similar to latest-model TSi100, would be a great deal at $150/pair if actually similar) and got outstanding results. After running the same speakers on a mid-grade home component integrated amp by NAD, I think I was hearing a fuller bottom end with the Pioneer 12VDC amp. Although others have noted this amp should prominently market its true continuous power rating at low distortion, not the peak power 500Watts blazoned on its shell, it got louder than desired for a porch dance party, where the absence of walls sucks away sound level, and PLENTY loud to fill my 18x12 living room to party-level loudness, running through the two polk 2-way bookshelf speakers. The presence of that full bass suggests it's got some reserves beyond that. What I'm most happy about is it doesn't gobble up much power. My rig is a prototype for a powerful battery-only portable PA system, using a Yamaha 4-channel mixer (https://smile.amazon.com/gp/product/B00I2J4V5G/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1), Behrenger PowerPlay personal monitor station (https://smile.amazon.com/Behringer-P1-B-BEHRINGER-POWERPLAY/dp/B00GRKXRMK/ref=pd_rhf_ee_s_rp_c_2_0_4/146-7260826-2760957?_encoding=UTF8&pd_rd_i=B00GRKXRMK&pd_rd_r=b81d7dd3-e0e0-40be-a9cb-1208225c60eb&pd_rd_w=5P9ol&pd_rd_wg=oWpZX&pf_rd_p=ea85cb41-868b-4aee-9344-f4ee71f19400&pf_rd_r=ZTY0RMF7TEQ258CX58DH&psc=1&refRID=ZTY0RMF7TEQ258CX58DH) could probably be removed from signal-chain, and possibly some Skars 6x9's (https://smile.amazon.com/gp/product/B019Y7VLUM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) in compact wedge enclosures (https://smile.amazon.com/gp/product/B074QZ5FSZ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1), all running off two pair of Talentcell 12V battery bricks with 12V, 9V, and USB 5V outputs (https://smile.amazon.com/gp/product/B01337QXMA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1). I had one parallel-jumpered pair of Talentcell 100 Wh (airport compliant) bricks running the Yamaha mixer and Behrenger personal pre-amp, and one pair of Talentcell 132 Wh bricks running the Pioneer power amp. The signal-level bricks are 3/4 the capacity of the power amp bricks. They drained faster than the power amp bricks, even though a couple mixers should be less than 1/2 the power of a power amp? The whole system played about 1 hour of very-loud music, 6 hours at a level you'd turn it down to talk to a friend, 2 hours at background level and probably another 4 hours with amp and signal processing in 'standby': on but not playing music. I'd guess the rig could do >4hours at very-loud volume, no problem, maybe 6 or 8. ... show more
Reviewed in the United States on October 25, 2020 by Robert Monk
    • Accurate Advertised Specs!
Style: 2-Channel - 1000W
Initial testing was impressive. Unlike most audio advertisements, this one is accurate! It's actually far more sound volume than I'll ever need or use. Knowing that audio specifications are usually blatant lies, I bought the cheapest head unit I could find, with the features I wanted. I ignored the output power ratings. It actually sounds decent but all the credit goes to this amp. Installation will be quick & simple. I'm using the factory speakers in my old Ford F-350 4x4 truck. I plan on buying another for my desk. Driven by my computer and connected to some Klipsch bookshelf speakers. I know, a bit overkill but like I said, everyone else can't be honest with specifications so at least this way I know what I'm buying. ... show more
Reviewed in the United States on November 1, 2025 by Jeff P
    • Sounds Great
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Great Amplifier
Reviewed in the United States on September 18, 2025 by J MILLS
    • Buenísimo
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Exelente
Reviewed in the United States on November 11, 2025 by Andrés rivera
    • Received a Dud! Don’t buy!!
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0 Stars. I received a dud. It wouldn’t even power up. Waste of my time. Very disappointed.
Reviewed in the United States on November 28, 2025 by blasyn

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