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Item#: N82E16882426047

Alpine Marine 5 Channel Power Density Digital Amplifier

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  • Alpine
  • Class D
  • Bridgeable
  • Built-in Crossover
  • CEA-2006 Compliant
  • 75W x 4 @ 4ohm 300W x 1 @ 2ohm

  • Overview
  • Specifications
  • Warranty & Returns
  • Reviews

Alpine introduces a new 5-channel, system-building amplifier, specially engineered for the Marine environment. The PDX-5M still features a compact chassis size for easy installation, with 90% efficiency at all power levels for precise, powerful sound.

Good things really do come in small, stackable packages. Who knew something so small could pump out so much power? The Alpine PDX-5M amplifiers are for the true enthusiast - those who want the best power, sound quality, and efficiency, all from a compact size. Get the most out of your system with Digital PDX-5M.

  • newegg Built for the Elements Your normal car audio components can't take the abuse of the Marine environment for long. The elements like water, salt/fog, and the blazing sun can cause your system to quickly breakdown in a short period of time. Because of this, Alpine has engineered the PDX-5M to withstand the harsh Marine environment. The PDX-5M has undergone rigorous ATSM-B117 testing for salt/fog to help prevent corrosion. The outside case passes the ASTM-G154/D4329 accelerated weather test for superior UV protection to prevent sun damage. All this attention to detail will provide the best sound experience and reliable performance on the water for your boat season after season.
  • newegg System Building Made Easy Want to build a basic system for your boat to start out? Do you have limited space but still want dynamic sound? Then the best amp to start with is the PDX-5M. With this one amp, you can connect four speakers and a subwoofer for outstanding sound quality. The amp provides 75 watts RMS to four channels and an incredible 300 watts RMS to a subwoofer. You get everything you need to power a complete system with the PDX-5M for loud and clean sound while you are cruising on the open water.
  • newegg Accurate Dynamic Sound Reproduction Alpine's goal is to deliver the best sound quality possible. With the PDX-5M, digital switch-mode amplification yields incredible sound quality. Advances in the PDX design include improved feedback circuitry to faithfully reproduce the input signal for improved dynamic range and higher fidelity. If you are listening to your favorite rock song, your amp is ready to jump from loud to calm and back again with ease.


Marine Amplifier

Marine Amplifier

Amplifier Class
Class D
Amplifier Channels
5 Channels
Built-in Crossover
Crossover Frequency Range
Crossover: 30Hz-400Hz, -12dB/oct. (Low-Pass/High-Pass for 4CH), 20Hz-200Hz, -24dB/oct. (Low-Pass for Mono)
I/O Ports
RCA Output: Gold Plated RCA Input Connectors


RMS Power
75W x 4 @ 4ohm

300W x 1 @ 2ohm
CEA-2006 Compliant

Dimension & Weight

Physical Dimension
Foot Print: 10.13" x 2.41" x 7.55"


Subsonic Filter: 15Hz (Fixed), -24dB/oct. for Mono

Terminal Layout: One-Side

Screw Mount / Wire Cover: Insert Screw Terminals and Plug-in Speaker Terminals

Mounting Design: Stacking Install

Thermal Control: Thermal Management Control

Power Supply: DC-DC PWM Power Supply

Power Supply Design: Direct FET Power

Board Circuitry: STAR Circuitry

Current Protection: Over-Current, Over-Voltage and Thermal Protection

Power Indicator: Top/Side Mounted LED Power/Status Indicator

Connector Plating: Gold Plated Input, Output, Power and Speaker Terminals

Pre-Amp Stage: Discrete

Board Design: Dual Sided Glass Epoxy PC Board

Gain Control: Continuously Adjustable Gain Control
Warranty, Returns, And Additional Information
  • Warranty
  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year
  • Read full details
  • Return Policies
    • Return for refund within: 30 days
    • Return for replacement within: 30 days
  • This item is covered by's Standard Return Policy.
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