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Pioneer GM-D1004 thumbnail image
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5 star
92%
4 star
8%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
4.6
Design
5
Usability
5

Customer Reviews

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Excellent Amp in a tiny package!!

Was a little bit nervous to get at first because of its size but liked the fact that it could be connected directly into the head unit and use the power from it rather then hook up to the battery making installation a breeze. Using the amp for my mids and highs on my jvc stereo and mb quart component speakers and man my speakers sound LOUD AND CLEAR with no distortion! And the amp fits right behind the stereo. Love it!!

By Edward on May 1, 2015 Checkmark Icon Verified purchase

67 found this helpful


freaking awesome

this pioneer amp is FREAKING AWESOME!!!! I have told about 20 of my friends and everyone that here my sound system ask me what kind of amp im running....... great buy for the money!!!!!

By greg on April 3, 2015

49 found this helpful


sub amp?

i am using this bridged to run a 12" dvc mb quart discus sub.
very impressed sonic shipped everything for free and gave me a ported box for free also. blown away by the deal i got here. Thanks

By FITster on October 28, 2015

40 found this helpful


unbelievable

small but it has good power, i have this 4 channel amp on my 2014 Civic Si i installed 2 channel for the rear speakers & the other 2 channel bridged for single 8" shallow mount MB Quart sub, sounds amazing, no need to buy LOC...

By mharvzvill on August 21, 2015

39 found this helpful


Very impressed

Awesome little amp fit in dash behind JVC media player and uses same power and ground installed it in an old 3/4 duramax extended cab work truck deadened all doors and 4- polk db 6.5 very clean and loud mid bass hits hard with awesome highs doesn't get much cheaper or easier very pleased

By Robert on January 25, 2016 Checkmark Icon Verified purchase

34 found this helpful


Simple install

Great amp for the money and easy to install with basic knowledge. Woke up my speakers a great deal and teamed with a powered subwoofer my Ram is good to go.

By Biscuits on November 8, 2015

35 found this helpful


Good deal

Product is great! It's small enough to easily hide it's powerful it sounds great I would definitely recommend this item it's a must have and it's easy to install.

By Jason on April 17, 2017 Checkmark Icon Verified purchase

33 found this helpful


Surprising

This little amp really surprised me. The size is small so it can be mounted practically anywhere. The sound improvement was amazing. I highly recommend this amp. The only con is there should be some better mounting brackets.

By Jeff on September 18, 2016

33 found this helpful


R Sherrill

Running this little amp in an old duramax extended cab work truck we deadened the doors while we had panels off polk db's in all the holes and a jvc media player love that it fits in dash behind the head and uses the same power and ground drove a few hundred miles and tweaked on it this thing blows me away it is extremely loud and clear Jacob def knows how to make an awesome system and Sonic is always my first choice.

By Bob on January 24, 2016

33 found this helpful


Perfect lil unit

I got this amp for Rockford fosgate p1 6.5 and p1 6.75 I wanted it because it did not need a dedicated power source from battery it is very small, tucks away behind dash board,there are no power wires running everywhere it is seemless and still looks very stock,sounds amazing it brings out the speakers and music potential

By Hose-B on May 1, 2017

32 found this helpful


It Rocks in 2ch Mode

I'm running this amp on a pair of Rockford Fosgate 6X8" speaker in my brother's Mustang in 2ch Mode. It plays super loud with no distortion. I just look at this tiny amp and shake my head at how much power it puts out. It's truly amazing. An awesome value.

By EdP on October 26, 2016 Checkmark Icon Verified purchase

29 found this helpful


Great enhancement to Pioneer headunit!

I paired this amplifier with a Pioneer AVH-X5800BHS headunit. It definitely gives the music punch and allows the Kicker speakers to do their thing without straining the headunit's amp. It pairs well with the Pioneer headunit and I suspect any other brand as well. There is no noise, turn-on pop, or otherwise. Good clean power and very compact- fits behind my headunit and shares power through the harness. Easy and well worth it!

By RG on February 21, 2016

26 found this helpful


Just what I needed

I was able to install this amp under the dash of my 2020 Chevy Bolt very easily (other than locating/identifying/splicing into the hard to access factory wires) and paired it with JBL speakers (601cf and 631) in all the doors and tweeter locations. The difference was amazing compared to the terrible stock setup. It was made even better by an NVX powered sub in the spare tire well with the high pass filters engaged on the pioneer amp. This configuration lets this amp get very loud while sounding very clean.

I was concerned about the lack of a gain control but the reality is that it's a non-issue and is probably for the best when using speaker level inputs like I had to. One thing that surprised me was that the turn signal/chime sounds from the factory radio still worked after installing without having to add any special converters or wiring. Those sounds were also still normal level and not blasting like I feared.

I'm not a complete audiophile but I'm picky when it comes to sound quality and this thing delivers.

By Kameron on October 16, 2025 Checkmark Icon Verified purchase
2020 Chevrolet Bolt EV


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