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Customer Reviews

Pioneer GM-DX871

Pioneer GM-DX871 Mono subwoofer amplifier — 800 watts RMS x 1 at 1 ohm

MFR # GM-DX871

4.5 out of 5 stars
37 reviews
View this product
Pioneer GM-DX871

Robert from Chicago Ridge, IL on 5/1/2025

2001 Chevrolet Suburban

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So far everything is good

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Cons:

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0 of 0 found this helpful

Pioneer GM-DX871

Thien from RICHMOND, TX on 3/29/2025

2014 Toyota Camry

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Great bang for your buck sub amp! These were very simple to wire up with everything being screw-type connections. Would definitely recommend some wire ferrules to tidy things up. It drives my 500W 2x10" subwoofers cleanly at 2 ohm with straightforward gain and LPF dials. The only thing I miss is a subsonic filter to protect the subwoofer but I would not expect that at this price point.

Pros: clean sound simple screw-type connections

Cons: no subsonic filter

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0 of 1 found this helpful

Good product so far.

Jim from Panama City, FL on 3/28/2025

1992 Ford Explorer

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Works and sounds great, not very hard to install if you are mechanically inclined at all.

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0 of 0 found this helpful

good value

Ernie from Caguas, PR on 3/18/2025

1997 Toyota RAV4

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Works as described. Currently pushing a JL Audio CP112-W0v3 and work perfectly. Ordering from Crutchfield webpage is super easy and shipping was fast. Very happy with purchase.

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0 of 0 found this helpful

Pioneer GM-DX871

Todd from Kingfisher, OK on 3/6/2025

2017 Ram 2500

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Powers my Pioneer Subs perfectly, sounds awesome!

Pros: Really sounds nice , very impressive

Cons: None

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0 of 0 found this helpful

Pioneer Quality

Randall G from Aurora, CO on 1/1/2025

2022 Nissan Frontier

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At $142 how could I go wrong? Was $100 off on sale. 500w x1 @ 2ohms is what I was looking for for the sub I got, should work great for my (budget system)

Pros: Pioneer quality at a on sale price .. Bonus! Comes with bass remote Class D

Cons: nothing

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0 of 1 found this helpful

Quality!

Tim from Coral Springs, FL on 12/22/2024

2021 Alfa Romeo Giulia

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This amp is really great. Plenty of power. Have it powering a kicker 10" down firing sub in the trunk of an alpha Romeo giulia and it sounds incredible! Amp doesn't get hot at all . Love it!

Pros: Powerful, clean, small, runs cool

Cons: None

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0 of 0 found this helpful

Amazing Power

Isiah from N Chesterfld, VA on 12/17/2024

2009 Jeep Patriot

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Pairs excellently with the Pioneer TS-A120D4. Install was simple and while I've only had it for a little over a week, it's been great with no overheating.

Pros: Price, Power, Compatibility with subwoofer.

Cons: None yet.

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0 of 1 found this helpful

PIONEER NEVER DISAPPOINTS

Jeffery from Aurora, IL on 11/3/2024

2017 Lexus ES350

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I had this amp before pushing the Kicker L7 CompQ so i bought another one to push my CompQ round 12 inch. Pioneer doesn't upset yet again. This amp handles a 1 Ohm load with no issues, Amp doesn't get hot at all. straight continuous power of 800 watts RMS. This is a must if you want an amp that does t get hot and distort your sound. If wired up correctly, You should turn heads coming up the street. PROPER WIRING AND PROPER CHOICE OF WIRING IS KEY. its like pairing your tv with the correct HDMI cables.

Pros: pushes hard, amp stays cool

Cons: none that i have seen, my second amp

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2 of 2 found this helpful

10/10

Eric from Evansville, IN on 10/22/2024

2017 Ford Mustang

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Was a choice between this and the Punch 1000xd. This amp delivers plenty of power. I run 2 4ohm dual coil 10's. This amp is great. I don't need a ton of power. And this is a lot more than what I wanted/needed. It can be as aggressive as you want it to be. It's paired with my lc2i pro. I mounted it on top of my box. It's small to be enough be mounted wherever you want.

Pros: Small Packs a punch Easy to set up

Cons: If you're looking for massive power and versatility, this probably isn't it for you.

Crutchfield response on

1 of 1 found this helpful

Great strong amp

Blaine from Florida keys, FL on 10/22/2024

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Great amp. Used it for 3 years and still going strong.

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3 of 3 found this helpful

great amp

Ivan from Janesville, WI on 10/14/2024

2012 Chevrolet Impala

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easy hook up size is prefect to place under seat

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1 of 1 found this helpful

Great amp for 10" sub!

Jeremy from Lees Summit, MO on 9/16/2024

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wonderful amp for my 10" Pioneer sub! Built a small box for my Range Rover and this amp is mounted to the sub box. Works perfect!!

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0 of 0 found this helpful

Pioneer GM-DX871

Crutchfield customer from New Ulm, MN on 7/20/2024

2012 Chevrolet Colorado

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This amp is great for powering my 2 Kicker subs. It's small but mighty, fits under my truck seat, and sends good, clean power to my subs.

Pros: Good power, small size, easy set up, includes a bass knob.

Cons: None so far

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1 of 1 found this helpful

Makes your heart flutter!

Rik from EUGENE, OR on 7/18/2024

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Great for my Skar SDR-12 D4s. Hits hard and sounds amazing!

Pros: Sound quality, "boom for your buck". Bass knob for quick adjustments

Cons: Doesn't quite push my subs to their full potential.

Crutchfield response on

0 of 0 found this helpful

Bang for the buck

Christopher from Roanoke, VA on 10/4/2023

2015 Nissan Altima

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Love it!!!! 300 watts to my 7 year old Pioneer Competition Series sub was what it needed. Bang for the buck, period.

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0 of 0 found this helpful

Pioneer GM-DX871

Paul from Spring, TX on 2/16/2023

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Gets the job done for my rockford fosgate 12in r2s

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0 of 0 found this helpful

Pioneer Amp

Jonathon Ste from Auburn, WA on 9/2/2022

2016 Honda Civic EX-L

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The amp is easy to install and paired perfectly with my 1600 watt sub. Sounds incredible. This amp was highly recommended to me and after researching it I am glad I purchased it.

Pros: - Performance - Price for value - Ease of installation

Cons: - Feels a little cheap. - Used to Amazon shipping. This shipped UPS who had a delay and didn't give accurate shipping updates. So I had to reschedule my install date. No biggie overall. Patience is a virtue???

Crutchfield response on

1 of 1 found this helpful

Very happy with this amp

Chad from Weston, NE on 7/25/2022

1997 Chevrolet S10

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Awesome amp! I paired this with 2 12" pioneer champion series subs, and they hit hard. Very pleased with the output this amp will handle.

Pros: Great power for little money. It does what pioneer says it will. Love the level control knob for changing to different types of music.

Cons: None

Crutchfield response on

2 of 3 found this helpful

Pioneer GM-DX871

Crutchfield customer from Paoli, IN on 5/18/2022

1992 Ford Mustang

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Bought 1 amp and it ended up being bad, sent back and got a 2nd one, it worked for like 2min then burnt all the fuses, and was sending power back through the grounds. Very disappointed

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Crutchfield response on 5/23/2022
This customer is currently working with our Tech Support team to resolve the issues with his amp. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

1 of 11 found this helpful

TOA BAJA

David from Toa Baja, PR on 1/15/2022

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The best. My speaker 12 kick my car

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0 of 0 found this helpful

Great amp

Ernesto from Yuma, AZ on 1/8/2022

2003 Chevrolet Avalanche

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Great amp lots of power. Mounting tabs are a little small for my liking. Out of the box the sticker on top started peeling.

Pros: Great price lots of power

Cons: Feels cheap but sounds great

Crutchfield response on

0 of 1 found this helpful

Pioneer GM-DX871

Crutchfield customer from New Iberia, LA on 11/25/2021

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I have this amp hooked to 2 kicker comp vr's at 1 ohm. Amp shuts off for no apparent reason while playing. Totally disappointed.

Pros: Sounds good when its working.

Cons: Shutting off for no reason.

Crutchfield response on 11/30/2021
Once we saw this review, our Tech Support specialist, Gage, reached out to this customer to help him with his amp. Whenever you encounter a problem with anything you purchase from Crutchfield, please contact our Tech Support team right away. Lifetime tech support comes with every Crutchfield purchase.

6 of 10 found this helpful

Excellent

Brent from ROSWELL, GA on 11/9/2021

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Impossible to beat it at the price. 1ohm stable. I measured it at 940 watts at 1 ohm. Definitely under rated. I'm a huge fan. I have 3 of the 4 channel marine pioneers and they are all also under rated and 1 ohm stable.

Pros: Size. Price. 1ohm stable. Makes more power than advertised.

Cons: They don't make one twice this size.

Crutchfield response on

8 of 10 found this helpful

Pioneer GM-DX871

Crutchfield customer from West Jordan, UT on 6/28/2021

2017 Ford F-350 XLT

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Very straight forward install. Plenty of power for my 2 - 8" subwoofers. Pioneer amps have plenty of power and are very reliable

Pros: Straightforward install and plenty of power

Cons:

Crutchfield response on

2 of 3 found this helpful

Pioneer GM-DX871

Crutchfield customer from Atlanta, GA on 6/14/2021

2012 Toyota Camry

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Really like that it is 1 and 2 ohm stable. Biggest factor in buying this amp was being able to have room for future upgrades.

Pros: Price Room for upgrades to system

Cons: Need an extra battery as it taxes the charging system a lot.

Crutchfield response on

4 of 4 found this helpful

Pioneer GM-DX871

Jacob from Texas on 2/7/2021

2007 Chevrolet Silverado 1500

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Perfect for my setup, love having the bass knob

Pros: Comes with Bass knob

Cons:

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0 of 0 found this helpful

King kong innthe trunk

Kelly from Palm Springs on 11/29/2020

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Much better than previous amp I had it's pretty good at push 2 jl we I'm happy with it

Pros: Simple

Cons: Didn't get sooner

Crutchfield response on

0 of 0 found this helpful

Pioneer GM-DX871

Crutchfield customer from Rosemead, CA on 7/3/2020

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Great amp

Pros: Reliable

Cons: None

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0 of 0 found this helpful

Pioneer GM-DX871

Crutchfield customer from Stockdale, TX on 6/18/2020

2006 Chevrolet Silverado 1500

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Easy install, and a big improvement over the old amp I was using.

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0 of 0 found this helpful

Pioneer GM-DX871

Chris from WALDORF, MD on 5/4/2020

2001 Volkswagen Jetta

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Price point is perfect for what you're getting. Nice clean power for my two 12's. May look to add a second one when I upgrade my 12's.

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1 of 1 found this helpful

Don't skimp on power!

Crutchfield customer from Tucson, AZ on 2/3/2020

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Seems to be a perfect compliment to Pioneer's 12" shallow mount subwoofer. Mounted discretely under the driver's seat with the remote dial under the dash.

Pros: Class D = Small footprint, big power. 300 watts to my 4 ohm sub.

Cons: Haven't found any yet.

Crutchfield response on

3 of 3 found this helpful

Pioneer GM-DX871

Crutchfield customer from Eagleville, TN on 1/3/2020

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Very good amp. Pushes 2 Memphis 10" subs with no problems

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Crutchfield response on

1 of 1 found this helpful

Pioneer GM-DX871

Nathan from Staunton, VA on 12/7/2019

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Great amp for the money! Paired with Kicker CompVR43CVR102. Pushes the subs very hard even with the gain set low. Also Crutchfield is very knowledgeable and I would recommend them to anyone who would like to upgrade their audio needs.

Pros: Affordable Compact design

Cons: None at this point

Crutchfield response on

4 of 4 found this helpful

Small package huge power!

Crutchfield customer from Mechanicsvlle, VA on 11/13/2019

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Great amp in a tiny package. I love how clear and crisp the bass is from this little amp.

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1 of 2 found this helpful

Pioneer GM-DX871

Crutchfield customer from Benton, AR on 8/8/2019

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Great sound and easy to install.

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1 of 1 found this helpful

Pioneer GM-DX871

Crutchfield customer from Upper Marlboro, MD on 4/18/2019

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Good punch for a great price

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1 of 5 found this helpful

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