Editor choice

Pioneer GM-D8604

picture of Pioneer GM-D8604 amplifier

Wow. Pioneer have built an enviable reputation over the past few years, and this amp carries on the line of great 4 channel amps.

In addition to great sound and all the features you would expect from a modern 4 channel amp, what really makes this amp stand out is its size. It is tiny in comparison to many of its competitors. This may seem like a strange feature to mention, given that once installed the amp will just sit in your vehicle, but the compact design of this amp makes it really versatile.

Even if you have quite a small vehicle, this amp will easily fit. And in larger vehicles, it is nice to know that your trunk space will not be taken up with a huge amplifier, because you can easily attach this one in an out of the way spot!

Not that this compact size means Pioneer have compromised on power. With 4 channels of 100 watts at 4 ohms, this tiny amplifier has an enormous amount of power. In honesty, even if your vehicle is large, and you are planning on installing 8 speakers, this amp has all the power you will ever need.

Pioneer GM-D8604

In addition to great sound and all the features you would expect from a modern 4 channel amp, what really makes this amp stand out is its size. It is tiny in comparison to many of its competitors. This may seem like a strange feature to mention, given that once installed the amp will just sit in your vehicle, but the compact design of this amp makes it really versatile.

In addition, of course, this Pioneer amp comes with a variety of other advantages:

9.5 Total Score
Pioneer GM-D8604

In addition to great sound and all the features you would expect from a modern 4 channel amp, what really makes this amp stand out is its size. It is tiny in comparison to many of its competitors. This may seem like a strange feature to mention, given that once installed the amp will just sit in your vehicle, but the compact design of this amp makes it really versatile.

Durability
9
Design
9
PROS
  • The serious audiophiles we spoke to for this review praised this amp as the best way to start a serious car audio system. It is not the cheapest available, but what you get for your money is quite incredible – the power offered by this amp means that even if you decide to upgrade your speakers, or add a subwoofer, at a later date, you will not have to change your amp!
  • The amp has some great and innovative safety features. Pioneer have included a system which automatically senses the amp’s temperature, and then modulates the input level accordingly. This ensures that you don’t have to worry about frying your amp, even when pushing the volume to the maximum!
  • Sometimes, high-powered amps like this can be really inefficient. Not here – the class FD amplification used in this amp is incredibly efficient, meaning that even when pumping out loads of power the amp is not a huge drain on your electrical system.
  • Last but not least, the amp sounds great. We are not sure how Pioneer have managed to achieve such great quality sound in a class FD amplifier, but this amp really gives class A amps a run for their money. Even when pushed to maximum output, there is no clipping. Your speakers will give up before this amp even breaks a sweat!
CONS
  • In truth, none. If you are looking for a powerful amp that is small enough to fit in even the tiniest vehicle, this is the one to get. Highly recommended for those who are starting a serious vehicle audio set up!
User Rating: 3.5 (2 votes)

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