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Black rectangular car amplifier with silver heatsink fins and Rockford Fosgate branding

Rockford Fosgate

Rockford Fosgate R2-300X4 Prime 4-channel car amplifier

SKU CH-4TZK-SVX1N

Four-channel car amplifier delivering 50 watts RMS per channel at four ohms with variable crossover and Class-D efficiency

  • Product typeAmplifiers
  • Key features4-channel car amplifier — 50 W RMS x 4
  • 50 watts RMS per channel at 4 ohms for clear sound
  • 75 watts RMS per channel at 2 ohms for flexible wiring
  • 150 watts RMS bridged at 4 ohms for subwoofer power
  • Variable 50-250 Hz crossover with 12 dB slope for precise tuning
  • CTA-2006 compliant Class-D design for reliable performance

Four-channel car amplifier

The Rockford Fosgate R2-300X4 Prime is a four-channel car amplifier designed for drivers who want to power a full set of speakers from one compact unit. It suits owners upgrading factory audio or building a custom system where space is limited.

50 watts RMS per channel at four ohms

The amplifier delivers 50 watts RMS per channel into a four-ohm load, 75 watts RMS per channel into two ohms and 150 watts RMS per pair when bridged at four ohms. CTA-2006 compliant ratings confirm the output figures.

Class-D design with variable crossover

A Class-D topology keeps heat low and current draw efficient while a variable 50Hz-250Hz Butterworth crossover at 12dB per octave handles high-pass, all-pass or low-pass duties. Auto remote turn-on with a defeat switch simplifies integration and 8-gauge power leads with a 50-amp fuse are recommended for installation.

How it compares

Measured against everything we stock in Car Audio Amplifiers, at today’s prices. Recalculated every night.

Price $248.99
Typical for this category: the median of 158 items is $225.49.

Specifications

Product
Brand nameRockford Fosgate
Product typeAmplifiers

Questions about this item

How loud will 50 watts RMS per channel actually play in a car?

At 4 ohms each channel delivers 50 watts RMS, which drives typical component or coaxial speakers to clean listening levels without distortion.

What does CTA-2006 compliant mean for the power rating?

CTA-2006 compliance means the 50 watts RMS x 4 at 4 ohms and 75 watts RMS x 4 at 2 ohms are measured under the same industry standard, so the numbers are directly comparable.

What size power and ground wire does this amplifier need?

The manufacturer recommends 8-gauge power and ground leads with a 50-amp fuse for proper current delivery and protection.

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