Pioneer GM-DX874 1,200 Watts Class D Powerhouse Amplifier, 4-Channel Amp, Variable Low-Pass Filter, Compact Design, and Remote Bass Boost Control

Amp is great, sound output is good. Powers a Kicker L7 Q12 with no issues.

I don’t have an issue spending money when it’s worth it. This is worth it. Great quality, packaging was nice, the amp looks good and seems like it will hold up for a while. Paired with some kicker shallow mount tens in a Colorado in a sealed box and if I had to start all over again I would buy exactly what I bought. Running around 800rms and it tuned really well also. Plenty of juice, great features, small form factor so it’s a great behind the seat option in a truck, and seems high quality. 9/10 power and ground were hard to get seated properly. Inexperience and lack of patience may have been the issue though.

For the price it is worth it. I used a 2ohm 12 inch Subwoofer to utilize the 500 watt rms power. Blew the voice coils on 2 subs. So I found a great deal for a sundown audio classic subwoofer, it handles 700 watts rms and seems to be handling the power this little amp puts out. I think it puts out more power than 500 watts as advertised this little amp does. It aint obnoxiously loud, like I would like it to be, but it's plenty loud in the cab of the car.

Great build quality. About as compact as you can get. Unfortunately it was not what I needed so it was returned. 5 star for build, festures and simplicity

This thing is junk! Or should I say “was” junk. First off, from the beginning the remote bass knob never worked right. Lots of static and electronic noise unless you positioned the knob just right. It was so bad that I ended up disconnecting it and just adjusting the bass through the head unit. Now for the bigger problem, IT DOESNT WORK ANYMORE!!! I’ve had this thing for less than 6 months and it’s fried! Called pioneer and they want me to pay to send it in. Not happy about this thing at this point. Buy and use your own risk and don’t rely on the warranty if you do have issues with it.

- Probably better for speakers than a sub - Sleek metal build that stays decently cool - Not as powerful as other amplifiers, but still good power. - Small, and can fit in tight spaces - Worth the money as a starter amplifier

Price was great ($169). I am running 4 3way Pioneers (70w) with this amp. No overheating, no glitches. Easy to hook up. Has presented no problems with my truck's charging/electrical system. Very pleased with purchase.

Added to a 2022 Mustang to power a 10" subwoofer, and 2 two-ways in the rear deck, to upgrade the existing "Bang and Olufson" stereo. Generally good results, after using a pre-amp DSP (AudioControl LC2i) to sort out the signal from the stock head unit. Has plenty of power, setting the gain about 40% level. The low pass and high pass filters work well, and I was able to custom tune to my ears. This is not a high end Amplifier, and you can find others that will cost you double or triple. For my needs it was perfect when you need just better and cleaner sound.