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Alpine PDX Series 5-Channel Power Density Digital Amplifier - PDX-5

Abt Model: PDX5 | UPC Code: 793276300942
 Discontinued Product This item is no longer available from our website.
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Alpine - PDX-5 - Car Audio Amplifiers
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75W x 4 + 300W x 1 Power Handling/ Continuously Adjustable Gain Control/ Dual Sided Glass Epoxy PC Board/ Gold Plated Input, Output, Power And Speaker Terminals/ Adjustable Low-Pass/High-Pass/ STAR Circuitry
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5.0 (2 reviews) 5

Product Details

Alpine PDX Series 5-Channel Power Density Digital Amplifier, Model PDX5

From the best-selling high-end amplifier line in the U.S., Alpine’s PDX line now comes in 5 channel form– meet the PDX-5! This is your answer to building a great system with only one amp. The PDX-5 still embodies the same great chassis size and cosmetic look as the rest of the PDX lineup, 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 series amplifiers are for the true car audio enthusiast – for 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.

Key Features:

  • Accurate Dynamic Sound Reproduction
    Alpine’s goal is to deliver the best sound quality possible. With the PDX series, 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’re listening to your favorite rock song, your amp is ready to jump from loud to calm and back again with ease
  • Installation Flexibility
    The PDX amplifiers’ unique design allow for a clean, easy, and fast install in your car! All the controls and wiring connections are in one convenient location
  • Save Space
    PDX amplifiers are 60% smaller than previous models with the same output power. Install your amps easily without sacrificing valuable room, power and performance
  • Smart Stacking
    The PDX amplifiers feature a smart stackable design. All PDX amplifiers are the same size, regardless of the amount of power or channel specifications. Their exclusive design allows them to be stacked vertically on top of one another. This is an industry-first installation option that saves a ton of space in the trunk or under a seat
  • Low Resistance, High Current Speaker Terminals
    Quick disconnect plugs with low resistance and high current capabilities make installing quick and easy
  • More Power, Better Sound
    PDX amplifiers deliver outstanding sound quality. The revolutionary design of the PDX incorporates improved feedback circuitry and power supply filtering system, plus a damping factor that is 350% better than Class A/B amps
  • Unprecedented Sound Matching & Accuracy
    A highly effective Powerful Feedback Circuit accurately compares the amplifier’s output against the original music signal. If there are any differences found between the two, the feedback circuit automatically removes the distortion in real-time! This keeps your music true to the original recording without added distortion or filter noise
  • Same Power Output - 2O or 4O Configuration
    PDX amplifiers have the unique capability to deliver the same power output regardless of 2O and 4O loads. This provides the ultimate in system flexibility and subwoofer configuration diversity



  • Gain Control: Continuously Adjustable Gain Control
  • Board Design: Dual Sided Glass Epoxy PC Board
  • Pre-Amp Stage: Discrete
  • Connector Plating: Gold Plated Input, Output, Power and Speaker Terminals
  • Crossover: Adjustable Low-Pass/High-Pass
  • RCA Output: Gold Plated RCA Input Connectors
  • Power Indicator: Top/Side Mounted LED Power/Status Indicator
  • Current Protection: Over-Current, Over-Voltage and Thermal Protection
  • Board Circuitry: STAR Circuitry
  • Power Supply Design: Direct FET Power
  • Power Supply: DC-DC PWM Power Supply
  • Thermal Control: Thermal Management Control
  • Channel Design: 4 Channel + 1 Channel (Mono)
  • Amplifier Type: Class-D


  • Mounting Design: Stacking Install
  • Screw Mount / Wire Cover: Insert Screw Terminals and Plug-in Speaker Terminals
  • Terminal Layout: One-Side


Sound Tuning

  • Subsonic Filter: 15Hz (Fixed), -24dB/oct. for Mono
  • Crossover: 30Hz-400Hz, -12dB/oct. (Low-Pass/High-Pass for 4CH), 20Hz-200Hz, -24dB/oct. (Low-Pass for Mono)

RMS Power Ratings

  • Per channel into 2 Ohms: (@ 14.4V =1%THD+N, 20Hz - 200Hz @ 2O for Mono ch.) 300W x 1
  • Per channel into 4 Ohms: (@ 14.4V =1%THD+N, 20Hz - 20kHz @ 4O for 4ch.) 75W x 4

CEA-2006 Power Ratings

  • CEA-2006 Power Rating: (4 O @14.4V =1% THD+N, S/N: 77dBA, ref:1W into 4 O and 2O for mono ch.) 75W x 4 + 300W x 1

Approximate Weight:

  • Shipping: 5 lbs
More reasons to buy the Alpine PDX-5 from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Alpine PDX-5 is Brand New.
  • The Alpine PDX-5 Ships in a Factory Sealed Box.
  • Abt ships this product for free!


by PowerReviews
Alpine PDX Series 5-Channel Power Density Digital Amplifier

(based on 2 reviews)

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Reviewed by 2 customers

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Amp exceeds expectations!

By NVPowerdoc

from Las Vegas, NV

About Me Gearhead, Practical

Verified Reviewer


  • Durable
  • Easy to Install
  • Easy To Use
  • Versatile


    Best Uses

    • Convertibles
    • Larger Cars
    • Luxury Cars
    • Small Cars
    • Sports Cars

    Comments about Alpine PDX Series 5-Channel Power Density Digital Amplifier:

    This amplifier is very compact, runs efficiently (78.5%) and has really cool speaker plugs that ensure proper polarity.

    I am using this amp on a Polaris RZR-s UTV. The amp has a very small footprint, incorporates 6 channels of input / 5 channels of output. It is rated at 4 x 75W & 1 x 300W. The tested documentation stated 4 x 110W and 1 x 414W.

    The amp is strong and offers long run times on a smaller battery.

    Service and delivery comments:

    Delivery was very prompt.

    Comment on this review



    By The Goat

    from hillsdale, NJ

    About Me Gearhead, Tuner

    Verified Reviewer


    • Easy to Install
    • Easy To Use


      Best Uses

        Comments about Alpine PDX Series 5-Channel Power Density Digital Amplifier:

        this amp is great. it has plenty of power even tho it only has a ten by eight footprint. its rated at 75x4 and 300x1 but alpine gives an actual reading which on mine came to 106x4 and 444x1. i have 5.25" polk momo components upfront with 1" tweeters in the dash, 6x9 full-range polk momo speakers in the rear and 2 12" sony explodes in the trunk. it blew me away the first time i heard it. best thing about the amp is not only its size but the quick and easy disconnects for the speakers and the fact that the sub channel will handle either 2 or 4 ohms.

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        Alpine PDX Series 5-Channel Power Density Digital Amplifier

        Alpine PDX Series 5-Channel Power Density Digital Amplifier


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