Power Every Speaker – Memphis Audio PRX500.4V2 4-Channel Power Reference Series Amplifier

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Introduction

The Memphis Audio PRX500.4V2 is a powerful and efficient 4-channel Class D amplifier designed to deliver clean, punchy sound to your mids and highs. Built as part of the trusted Power Reference Series, this amp is your go-to solution for upgrading full-range speakers with impressive output, tight control, and crystal-clear fidelity. Whether you're replacing a factory system or powering an aftermarket setup, the PRX500.4V2 offers rock-solid performance in a compact, stylish chassis.

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Clean, Controlled Power for Mids & Highs

The PRX500.4V2 is rated to deliver 75 watts RMS x 4 at 4 ohms or 125 watts RMS x 4 at 2 ohms, providing more than enough power to drive coaxial or component speakers to their full potential. You can also bridge it into 2 channels for 250 watts RMS x 2 @ 4 ohms, making it perfect for high-powered setups or midbass applications. If you want your vocals louder, instruments sharper, and every note clean at high volumes — this is the amp to get it done.

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Class D Efficiency in a Compact Package

Thanks to its Class D full-range design, the PRX500.4V2 runs cool, efficient, and compact — delivering high output without the power draw or heat of traditional Class AB amps. It’s ideal for tight installs under seats or behind panels in trucks, SUVs, and sedans. Whether you're building a stealthy sound system or a custom show rig, this amp provides the output you need without taking up precious space.

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Tuned for Precision Sound

Each pair of channels is equipped with independent high-pass or low-pass filters (40–400 Hz) to give you full flexibility over your sound. These allow you to optimize your speaker frequencies whether you're running tweeters, midbass, or full-range setups. The input sensitivity controls ensure clean signal matching from factory or aftermarket head units, while the signal-to-noise ratio over 85 dB keeps your output clean and undistorted.

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Built Memphis Tough

Finished in sleek matte black with blue LED accent lighting, the PRX500.4V2 looks just as good as it sounds. Its rugged chassis, oversized terminals, and well-designed heatsink are built to handle the road and the volume. Whether it’s bumping music on a hot summer day or tucked behind a panel in a winter beater, this amp is built to perform.

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Key Features

• RMS Power:

  • 75W x 4 @ 4 Ohms

  • 125W x 4 @ 2 Ohms

  • 250W x 2 @ 4 Ohms (Bridged)

• Class D Full-Range Design – Efficient, clean power in a compact chassis.

• Variable Crossovers:

  • High-Pass / Low-Pass Filters: 40–400 Hz

• LED Accent Lighting – Blue top and underglow illumination.

• Compact Footprint – Easy fit for under-seat or stealth installations.

• Input Sensitivity: 200mV – 6V

• Signal-to-Noise Ratio: >85 dB

• Oversized Terminals – Secure connections for high-output wiring.

• Protection Circuitry – Short circuit, thermal, overload safeguards.

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Why Choose the Memphis PRX500.4V2?

The PRX500.4V2 offers a perfect mix of clean power, install flexibility, and audio control — everything you need to bring your speaker system to life. It’s compact but capable, powerful yet efficient, and designed by Memphis Audio to deliver years of real-world performance. Whether you’re pushing pro-audio mids, high-end components, or wake tower coaxials, this amp handles it with ease.

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What’s in the Box?

• 1 x Memphis Audio PRX500.4V2 4-Channel Amplifier

• Mounting Hardware Kit

• User Manual

• Memphis Audio Decal

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Specifications

• RMS Output:

  • 75W x 4 @ 4 Ohms

  • 125W x 4 @ 2 Ohms

  • 250W x 2 @ 4 Ohms Bridged

• Amplifier Class: D (Full-Range)

• Frequency Response: 10 Hz – 50,000 Hz

• Crossover Range: 40 – 400 Hz HPF/LPF

• Signal-to-Noise Ratio: >85 dB

• Input Sensitivity: 200 mV – 6V

• LED Lighting: Blue accent top and underglow

• Dimensions (L x W x H): Approx. 14.5” x 7.5” x 2.1”

• Protection Circuits: Thermal, Overload, Short

• Warranty: 1 Year

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FAQs

Can I use this amp for my front and rear door speakers?

• Absolutely! It’s perfect for powering four coaxials or components with up to 125W RMS each.

Is it bridgeable?

• Yes — you can bridge it to 2 channels for up to 250W x 2 RMS, ideal for high-output midbass.

Will it fit under my seat?

• Most likely — the compact chassis makes it easy to mount under seats or in small cavities.

Can I use this with a factory radio?

• Yes! It accepts high-level and RCA inputs, so it works with both stock and aftermarket units.

Is it powerful enough for pro-audio speakers?

• Definitely. It has the output and damping control to run mids, horns, or compression drivers effectively.

Does it include a bass knob?

• No, this is a full-range amplifier — bass knobs are typically included with monoblocks for subwoofer control.