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

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.

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

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.

I needed an amp that had 100w x4 speakers for my Kickers that are each rated for 100w rms. This was the only amp I could find that solves that problem without costing too much. Installed it, used it, and I'm satisfied with it! Sound quality is great and it provides AMPle power. Satisfied customer. 5 stars.

Decent price and item is as described, only thing it I could just plug in the sub to the out put rca part had to wire with the speaker plug in and adjust the amp settings. I used it to set up my Bluetooth speaker system in the car no head unit.

Awesome amplifier! Pioneer is the factory, amplified sound system in my car. I replaced all speakers and amplifier with updated Pioneer units. This amp for great in the factory location even though it's slightly bigger, but not too big that it wouldn't fit on the factory amp bracket. I recommend.

Bought this thinking it was brand new and come to find out it was refurbished. Okay not a big deal until I stumbled onto one of the rca plugs was defective.

Added in to bring up my mids and highs with my skar evl, put it to a couple 75 rockford fosgate 6x9s and 100w kenwood 6.75s and my ears are ringing, i drive half an hour back and forth from work and it did go into protect mode but not from the heat not sure what caused it, i still have room to bump the gains before i get distortion. Sound quality is decent for what it is, would recommend unless you are running a smaller subwoofer anything under 1000w this guy is just going to drown it out and make you question if its really there and working lol.

Great customer service by 1156425 Ontario Inc who took back this amplifier, thank you very much for that. The amplifier itself, if you like to listen to music is a very poor amplifier. The signal to noise ratio is absolutely terrible, which means that listening to jazz at low volume, you hear a lot of pink noise in your speakers. BUT it's capable of driving speakers to make a lot of noise for a low price. If you want high volume and to impress people, yes, if you are a fine listener, no.

Das Gerät gibt alles was geht ist geil

Over all gud amp

This amplifier is the best I’ve ever had, and I’ve had a few, it doesn’t go into heat protection mode after 2 minutes, like class a/b amplifiers. It makes the seats shake when turned a bit higher and I haven’t noticed any distortion. I thought I heard a rattle, but it was the interior light lol! This amplifier can power big speakers(150 watts rms) my previous Sony amp could not keep the power up more than 5 minutes, and there was hardly any midrange frequencies. Honestly I can’t turn it up to full volume because it’s too loud.

Hi! Last Friday (sept 19), I attempted to get the amp professionally installed to upgrade my existing fully functional/operating truck stereo (4 speakers and 2 subwoofers). Unfortunately, when the installer turned on this amp, there was a popping sound/clicking sounds and then a high pitched whine.......there is now a blue flashing light? The installer immediately turned it off and said he has only had that happen once before in his over 20 years of car stereo installation.....installer checked all wiring and had no issues! I am working with seller (GTA Electronics) for free replacement.....will update this review afterwards!