Pioneer GM-A4704 520W 4-Channel Bridgeable Amplifier
Small and mean. The GM-A4704 combines high-class design and massive power with minimal distortion, offering maximum flexibility in installation. Its one-piece heat sink housing and up to 6.5 V input voltage make it the ideal component for the sound stage you have always wanted to experience in your vehicle. This 4-channel amplifier can drive multiple speakers and subwoofers, but it can also be bridged to power a single subwoofer with its full power.
Small and mean. The GM-A4704 combines high-class design and massive power with minimal distortion, offering maximum flexibility in installation. Its one-piece heat sink housing and up to 6.5 V input voltage make it the ideal component for the sound stage you have always wanted to experience in your vehicle. This 4-channel amplifier can drive multiple speakers and subwoofers, but it can also be bridged to power a single subwoofer with its full power.
Small and mean. The GM-A4704 combines high-class design and massive power with minimal distortion, offering maximum flexibility in installation. Its one-piece heat sink housing and up to 6.5 V input voltage make it the ideal component for the sound stage you have always wanted to experience in your vehicle. This 4-channel amplifier can drive multiple speakers and subwoofers, but it can also be bridged to power a single subwoofer with its full power.
Small and mean. The GM-A4704 combines high-class design and massive power with minimal distortion, offering maximum flexibility in installation. Its one-piece heat sink housing and up to 6.5 V input voltage make it the ideal component for the sound stage you have always wanted to experience in your vehicle. This 4-channel amplifier can drive multiple speakers and subwoofers, but it can also be bridged to power a single subwoofer with its full power.
in 13 offers
The lowest price for Pioneer GM-A4704 520W 4-Channel Bridgeable Amplifier right now is $159.85 at Amazon.com.au, compared across 9 retailers.
The all-time low was $99.00 on 21 May 2026 — today's price is 61% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 16 June 2026.
Last updated at 16/06/2026 10:21:33
Pioneer GM-A4704 4-Channel Bridgeable Amplifier
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Pioneer GM-A4704 4-Channel Bridgeable Amplifier
Delivery $7.95
Pioneer GM-A4704 4-Channel Bridgeable Amplifier | 260W RMS Power
Free delivery
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Pioneer Gm-a4704 4-channel Bridgeable Amplifier
Free delivery
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Pioneer Gm-a4704 520w 4-channel Bridgeable Amplifier
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer GM-A4704 520W 4-Channel Bridgeable Amplifier
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer Gm-a4704 4-channel Bridgeable Amplifier
Delivery $9.95
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer GM-A4704 4-Channel Bridgeable Amplifier - Live Price Matching
Delivery $7.95
Pioneer GM-A4704 520W 4-Channel Bridgeable Amplifier
Delivery between 19–29 June $9.90
Pioneer GM A4704
Free delivery
originally posted on onlinecarstereo.com/
Installed with fhs501bt head unit and 4 4way pioneer speakers. Easy install. Really woke up the sound. Now I want a sub. Definitely recommend this amp!
originally posted on onlinecarstereo.com/
Installed this amp yesterday in my 2017 Chevy Sonic to power (2) Pioneer TS-A6970F 6x9’s and the sound is amazing, couldn’t be happier. Crutchfield recommends 10 gauge power wire but I went with 8 gauge and it seemed to work great, ran amp hard for a couple hours yesterday with no issues. Great amp for the money I would definitely recommend.
originally posted on canadiantire.ca
I bought this amp and it powered my 2-10" speakers so little, I couldn't tell if they were on. I tried everything and this amp was a major dud for sub woofers
| RCA Inputs | 4-CH |
| Amplifier Class | Class AB |
| Hi-Res Certified | No |
| Bridgeable | Yes |
| Warranty | 1 Year |
Pioneer GM-A4704 4-Channel Bridgeable Amplifier
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer GM-A4704 4-Channel Bridgeable Amplifier
Delivery $7.95
Pioneer GM-A4704 4-Channel Bridgeable Amplifier | 260W RMS Power
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer Gm-a4704 4-channel Bridgeable Amplifier
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Pioneer Gm-a4704 520w 4-channel Bridgeable Amplifier
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Installed with fhs501bt head unit and 4 4way pioneer speakers. Easy install. Really woke up the sound. Now I want a sub. Definitely recommend this amp!
Installed this amp yesterday in my 2017 Chevy Sonic to power (2) Pioneer TS-A6970F 6x9’s and the sound is amazing, couldn’t be happier. Crutchfield recommends 10 gauge power wire but I went with 8 gauge and it seemed to work great, ran amp hard for a couple hours yesterday with no issues. Great amp for the money I would definitely recommend.
I bought this amp and it powered my 2-10" speakers so little, I couldn't tell if they were on. I tried everything and this amp was a major dud for sub woofers
Ya get what ya pay for .. It works good . but gets hot fast ..i wouldn't recommend this for under seat\ dash installs .. It needs to breath.. But it works great other than that...
Sound quality is good, but the connectors for speaker outs are terrible. Connectors protrude from the body of the amp and space is limited - using better quality speaker wires / crimp on connectors almost impossible. Finding a place to mount the amp was a challenge… it’s dimensions are just a little large to mount under most modern automobile seats.
The unit was nice looking but functionality was terrible. I could not power up even 1 small rca speaker before it would cut out constantly. If you are trying to power headphones this will work otherwise don't count on this little guy powering much of anything.
I'm using this amplifier in 4 channel mode, but not bridged on the B channel as my subs are 4ohms. It pumps loud with very little distortion even coming in from a line convertor spiked off the speaker leads. This is only one day after installing. Lets now see how it handles over the test of time.
An absolutely stunning piece and plenty of bang for my buck .I would highly recommend this especially at its price point .
Works great for 4 channel RCA setup that comes with most after market car audio stereos. I have my front left and right speakers and rear left and right speakers wired direct to the amp and they sound great! Should have done this a long time ago!
Really nice amp. I am only driving a pair of 4 way Pioneer 6x9's and it works awesomely!! Lots of punch and nice fit and finish. Plenty of options for the everyday audiophile at a good price.
| RCA Inputs | 4-CH |
| Amplifier Class | Class AB |
| Hi-Res Certified | No |
| Bridgeable | Yes |
| Warranty | 1 Year |
