Customer Ratings & Reviews

great product!

I bought this item 6 months ago and cant complain! I cant say anything about the durability other than it still works great. All the power and settings you need, in one small amp:) love it! Thanks Sonic.

Excellent little amp!

I picked this up about 6 months ago, to go along with the PA D1000.1 sub amp.

Pros: it's tiny, powerful and very clean sounding. Nice looking too.

Con: It's a bit more expensive than it's competitors.

If you have the money, do it. I love this thing!

This tiny amp will kick your butt!

Clean design, compact dimensions, powerful and clean sound. I'm happy with this purchase.

WOW!

Just received my amplifier today and i am just downright impressed by this amp. The size of the 4000.4 is just amazing considering how much power it produces. Hooked it up to some infinity 6x9's and pioneer 4x6's and thought i was going to blow them! The sound was crystal clear, got insanely loud, and sounded a ton better than my old Hifonics 4ch. Another great addition is the 0 gauge power and ground adapters. Great to give this power hungry amp the power it needs. Was skeptical at first because i never bought anything Polk but in the end NO REGRETS at all! If 50 watts rms is not enough for your speakers, upgrade to this amp just be sure you have quality speakers.

So far so good!

Bought this for our river boat, it's installed in the bathroom(no moisture). Ran it in 123 degree temp full volume for an hour, never shut down and was not much above ambient temps. Very impressed...

Money well spenr

Always been a fan of Polk, grew up with it and its also my home theatre system. After seeing thr PAD4000.4 i thought this would bbe a nice addition to my car stereo system. Install was easy and its really loud and clear. Love it!

Polk PA D4000.4

Love this amp always been Alpine fan but this is by far the best amp I've owned very very loud and clean pushing 4 polk 6.5 and a polk 10" sub
Very easy to hide also.

Great Amp and Service

This amp pushes my JL mx 880's very well. The amp does a great job and no issues what's so ever. Most of all sonic electronic is a great place to buy from.

Good little amp

Upgraded from alpine f240 amp this polk blows it away. Very small and pretty powerful so far

By John on August 7, 2015 Verified purchase

A big bang for your buck!

I recently in stalled hertz components in my front doors and hertz coaxials in the rear doors and looking for a powerful clean amp to push these speakers without taking the last of my money.This polk amp was the one I needed.It's s/n ratio low distortion really pushes the hertz really well I'm very happy

POLK PA D4000.4

Bought this amp to go in my 2010 Tacoma Reg cab, Polk db6501's in the doors & Polk MM1040 behind the seat. All I can say is AWESOME.
Loud, clean music! Couldn't be happier. If your looking for a 4 ch amp, to use as a 3 ch, as I did, this works very well. Only gave it 4 stars in Durability because it's only been in use , a few months. Time will tell.

By Harold on January 8, 2016 Verified purchase

Sweet amp

Very pleased with this amp. I have 2 sets of 6.75 mobile monitor components running off of it. These speakers are 2.7 ohms each channel and this amp has no problems pushing them. Clean and crisp sound. Cannot ask for more.

Great Amp

Great amp very clean and loud running 4- db 6.5 " 1-db 8" sub. Hard to beat .

By Robert on January 25, 2016 Verified purchase

Polk PA D4000.4

This AMP is impressive.. For its size, the power output of 125 RMS watts x4 @ 4ohms is amazing. Based on the video on the main page, could be higher.. I am running 2 JBL 6x9's and 4 Polk Audio 6x9's, and this thing powers them all quite nicely. adjust-ability is great, very happy with this AMP in my boat..

Very compact for its size

I installed 2 Amps on my boat to power the Polk speakers. very easy installation. Very compact. Very easy to adjust and very clear instructions.

load and clear

I've tried a couple of other brands at similar cost and I can honestly say the difference is most noticeable.I think Polk products sound great and give you tremendous value for your $.

PAD 4000

I ordered this amp and received it about 30 days ago for my boat. It been sitting on the shelf ready to install since. I opened it up when I received it and it appears to be quality product. That's about all I can tell you since I have been traveling for work since shortly after its arrival. The reviews I read before buying were overall good. I hope to get it installed soon, then I can give it a real review but I keep getting emails to review it now. Hope this helps.