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Polk Audio

Polk Audio PA D4000.4 (PAD4000.4) 800W RMS PA D Series Class-D 4-Channel Car Amplifier

  • Based on 137 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Feb 27
Order within 18 hours and 57 minutes
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Features

  • 125 watts RMS x 4 at 4 ohms (200 watts RMS x 4 at 2 ohms)
  • 200 watts RMS x 2 in bridged mode (4-ohm stable in bridged mode)
  • separate variable high-pass filters for front and rear channels (20-4000 Hz, 12 dB per octave)
  • separate variable low-pass filters for front and rear channels (50-5000 Hz, 12 dB per octave)
  • Small footprint. Dimensions: 6-3/4"W x 10-15/16"L x 1-13/16"H

Description

Whether mounted to the tower of a ski boat or below deck in a cabin cruiser, Polk Audio marine loudspeakers are designed, built and tested to withstand even the harshest aquatic conditions. See why top watercraft manufacturers, like Correct Craft, put their trust in Polk Audio for reliable performance in and out of the water.

Item dimensions L x W x H: 6.69 x 5.91 x 3.15 inches


Voltage: 16 Volts


Manufacturer: Polk Audio


Mounting Type: Boat Mount


Brand: Polk Audio


Item dimensions L x W x H: 6.69 x 5.91 x 3.15 inches


Voltage: 16 Volts


Manufacturer: Polk Audio


Mounting Type: Boat Mount


Brand: Polk Audio


Number of Channels: 4


Output Power: 125 Watts


Specification Met: certified frustration-free


Material: Plastic


Global Trade Identification Number: 38


UPC: 747192121938 066511790601


Product Dimensions: 6.69 x 5.91 x 3.15 inches


Item Weight: 2.2 pounds


Item model number: PAD40004


Batteries: 1 12V batteries required.


Is Discontinued By Manufacturer: Yes


Other display features: Wireless


Color: Black


Whats in the box: Polk 4 Channel Amp


Department: unisex-adult


Date First Available: October 11, 2011


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Feb 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Hifi amp with tons of power for a budget price
I had a much expensive amplifier the one of the R series of Alpine with 6 channels!! I was only using 4 chanels cause I am an audiophile I don't care about noize, but good quality. So I decided to buy this amp for my 4 focal speakers ( 2 component and 2 full range) added a cheap DSP from Dayton audio with Aptx HD bluetooth codec capabilities and a separate subwoofer with a 1200 rms Scar subwoofer amp. The Polk sounds way better than the Alpine, amazing quality for the price and yes the watts are real not BS... This is a powerful Amp with an amazing Hifi quality.. Tweeters sound crispy and detailed and the mind range of the voices its pretty good!! Don't waste your money in more expensive amps, this old amp is powerfull and has the Hifi quality ... show more
Reviewed in the United States on March 28, 2025 by Jeremy JF
    • Big bang
Review Image by chris chris
This thing does the job in small spaces by putting out serious power. It is built well and looks clean.
Reviewed in the United States on February 22, 2025 by chris chris
    • bandpassable 4 channel amp , class d 125rms at 2 oms
great amp for a class d 4ch. i have three and two mono blocks , my favorite feature that makes me want this amp in 2022 , its been discontinued for 10 years , is the band-pass-able crossover , my first experience with this amp was two channels running 2 polk mm 6.5" component and two mm1540 woofers at 2 ohms bridged , this amp pushed the woofers to near xmax , couldnt tell it wasnt getting rms visually or audibly , and afters hours of play at high volume amps is cool and the mids never distorted or volume drop in and out when the bass gets heavy. great amp , i expanded to another 4 chn added 2 more pairs of mm 6.5 , now ive bought my third , i plan on putting all the tweeters on one amp , all the mid / high ranges on another and the mid / bass on the third . since the amps are band passable i can the mid high bandpass at 3k - 800 , and the mid bass on at 800hz - 100hz , and subs at 100hz - 10hz ... show more
Reviewed in the United States on July 17, 2022 by branden
    • Checked with Polk they will honor warranty
I just upgraded my 2016 F150 with a decent Head unit and speakers, and felt like they needed a bit more power. This amp is compact in size but gives a nice punch to all four speakers. You can adjust its gain to fine tune the system. I like to hear my music sometimes loud, but without distortion or over modulation. This was a great choice for me. ... show more
Reviewed in the United States on January 10, 2025 by Your Average Shopper
    • No good for subs without external crossover
Good size and power but does not have a low pass crossover so unless you have a head unit with that built in you can only use this amp for Mids and highs. Very disappointed in that. Polk customer service agreed with me on that.
Reviewed in the United States on June 10, 2016 by steven sanger
    • Sounds decent
Sounds good. Will not power a subwoofer bridged on the other two channels. Good for door speakers only.
Reviewed in the United States on April 30, 2025 by Russell P.
    • Nice amplifier but make sure .......
Quality unit but who ever processed this order NEVER put the amplifier in a shipping box but placed a shipping label on the actual item box!! UPDATE: I just had seen that here is an option to choose to have items shipped with the label directly on the item box or to have the item placed in a shipping box to hide the contents.... :) ... show more
Reviewed in the United States on September 19, 2024 by John R.H.
    • Awesome
I haven't yet installed this, but I purchased a p.1000 a while back and this one was packaged even better than the last. Good job guys I can't wait to see how this makes my system sound!!
Reviewed in the United States on August 5, 2023 by joshua meshberger

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