Rockford Fosgate R500X1D Car Amplifier Review

When we talk about car amplifiers, Rockford Fosgate R500X1D is often mentioned. This amplifier has 500 watts of power at 2 Ohms as well as 300 watts at 2 Ohms. It uses an efficient class D circuitry with a frequency band from 20 Hz to 250 Hz.

This amp lets you modify the quality of your sound with its onboard punch bass EQ that allows you to adjust the settings with +18 dB and can increase up to 45 Hz. It also has an infrasonic filter and 12 dB low pass/ high pass and AP crossover for better regulation of your sound setting.

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51m3QK2fvWLSmall but Powerful Amplifier with Exceptional Performance

A typical thing that audio fanatic would look for when it comes to amplifiers is its power. However, not everyone is willing to pay a high price. Thus they end up disappointed with the amp. But with R500X1D you get what you pay for. It is not as big as the usual amplifiers but it produces powerful sound.

It comes with a measurement of 8.5 Length x 6.8 Width x 2 Height inches and weighs 5.4 pounds. It is small and portable allowing easy installation. Despite its small appearance, the amp can boost its bass up to a maximum power of 500 watts at 2 Ohms of high-quality sound coupled with technical accuracy. Adding to your outstanding audio experience is the punch level control feature that enables the removal of distortion in the automobile surroundings. This results in a deep and clean bass sound.

Designed for Utmost Safety and Increased Durability

The R500X1D does not only produce quality sound but it also has an aesthetic look. It has a cast aluminum heat sink intended to improve the usability and efficiency of the amp with perfection. The material is particularly utilized to extract heat from components in the device. It effectively dispels output transistor heat thus preventing the device from getting too hot and avoiding damage to any of its part.

This car amp also comes with a thermal sensing security feature that would counter over current and short circuit inhibiting unit breakdowns and heating issues. Adding to its safety and efficiency is its compliance to CEA-2006 which includes only a number of amps in the market.

Rockford Fosgate R500X1D Features and Specifications

  • Total power of 500 watts RMS, rated power of 300 RMS x 1 channel at 4 Ohms, 500 RMS x 1 channel at 2 Ohms
  • MOSFET power supply capable of large power output
  • Includes overload and speaker short circuit, providing two-way protection electrical structure
  • Durable extruded cast aluminum heat sink for optimal heat dissipation
  • Remote punch level control
  • Top mounted controls
  • Real-time power supply and output thermal sensing
  • Infrasonic filter and 12 dB octave low pass / high pass/ AP crossover

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Rockford Fosgate R500X1D Reviews

With its overall look and performance, the R500X1D is given an editor rating of 8/10 coming from 492 customers.

One customer states that he opted for this particular car amp because he wants something that is lightweight with a clean bass and at a price he could afford.

At first, he said that he was concerned because it does not have any cooling vents. But after some research, he finally decided to purchase it. He said that it fits perfectly in the trunk of his car without talking a lot of space. He claimed that in comparison to the other amps he acquired in the past, the R500X1D is surprising him with its performance. According to him, it is smaller but definitely better than the others.

Things to Improve

There are 2 common things that few buyers don’t like about this amp. One is that the LED light on the remote knob can be glaring especially when it’s dark. Another issue they raised is that the package does not include mounting screws which can be a bit frustrating for those who are too eager to mount their amps.

Good thing these are only minor issues which do not affect the overall performance of the R500X1D. When you hear the quality of sound produced by the amp, you would forget about those minor issues mentioned.  Its small size does not hinder it from satisfying audio enthusiasts craving for superior sound.


You can never judge a speaker just by merely looking at its size, like with Rockford Fosgate R500X1D amplifier. This amp has proven that with the right technology, even small devices like this can produce powerful and high-quality audio. On top of its superb performance, it also has safety features that will help preserve your device for several years without experiencing any issues particularly heating glitches. Indeed, this amp is a great investment for those who are looking to upgrade their car audio.

If you want to know more about other top performing amplifiers, check out different car amplifier reviews here.

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