Rockford Fosgate R400-4D

picture of Rockford Fosgate R400-4D

Rockford are something of a niche brand at the moment, and we admit that we were not familiar with  them prior to writing this review. However, on the recommendation of some serious audiophiles, we looked at this amp, and we are glad that we did!

What really stands out here is the sound quality. For most people, especially in car audio, the differences between the frequency response of amplifiers is so slight to be unnoticeable, but as soon as we plugged this one in we realized that this amp is one of the best available.

The output of this 4 channel amp stays incredibly clean, even when driving low quality speakers, and even when pushed to near its maximum volume. If you listen to electronica, in particular, this has great advantages, as all those gorgeous synthesizer tones stay well defined.

If you are looking for great sound quality, and don’t mind paying a little extra for it, then this is the amp to get!

Rockford Fosgate R400-4D

What really stands out here is the sound quality. For most people, especially in car audio, the differences between the frequency response of amplifiers is so slight to be unnoticeable, but as soon as we plugged this one in we realized that this amp is one of the best available.

In addition, this amp has several big advantages:

9 Total Score
Rockford Fosgate R400-4D

What really stands out here is the sound quality. For most people, especially in car audio, the differences between the frequency response of amplifiers is so slight to be unnoticeable, but as soon as we plugged this one in we realized that this amp is one of the best available.

Durability
8.5
Design
8
PROS
  • It delivers more than enough power for most situations. With 75 watts of power, you will not have to worry about being heard anywhere. When paired with suitable speakers, the volume output of this amp rivals those with 100 watts or more of power.
  • The build quality of this amp is something else. From the moment you receive this amp, you will be impressed with how solid it feels, and we are confident that it will put up with years of abuse without complaining.
  • The amp is fully bridgeable, making it a great investment. You can connect the back 2 channels together, and power your sub with up to 200 watts RMS, or even use it as a dedicated subwoofer amp, powering 2 subs together!
  • The protection on this amp is as good as you would expect from the price. It offers 3 stages of protection – thermal, over-current, and short-circuits, meaning that even if your vehicle suddenly develops an electrical fault, you can be sure that your amp will be safe.
CONS
  • Very few. This is one of the more expensive units we reviewed, but we also think it is on of the best. For just a little more than the other amps listed here, you get sound quality which is undoubtedly better than any other amp on the market today.
User Rating: 3 (1 votes)

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