Customer Ratings & Reviews

F4

small and beautiful design can install in any location in car,powerful amplifier that use for any component speaker and low energy consumption.
setup it with hertz 3way mille component.very good sound.

alpine never disapoints

i have a percison power amp rated at 110 rms at 4 ohms x 4 channels.This is fated at 100.Instantly better sound and quality.THis is a great amp and u wont be diapointed if u buy it.

Best 4 channel I've owned

This is by far the best 4 channel I've owned or maybe even seen. I've been doing car audio for about 8 years now and this thing is amazing. Best sound quality I've ever heard from an amp and puts out true power. This thing makes my surround speakers sound amazing and honestly puts out too much power for them almost need upgrade again for this amp but zero complaints at all. Would recommend to anyone looking to have a great system.

Great power for the money

I bought this amp a few months ago and absolutely love it. It's powering my mids and highs up front. The highs sound crisp and clear, the mids bang out some drum beats and they will get LOUD when I want them to. The space this amp uses is also a big plus as I have a truck. I've had no issues at all so far with the amp. I do wish you had slightly more adjustability, but I can't complain. Overall, a happy customer!

very nice amplifier

Great sounding amplifier, the class d design sounds every bit as good as my former soundstream and phoenix gold titanium seriers class AB amps. also bought it for its effeciency which is superb, nice small size and the installatioin is the best yet that i have used and i have installed many different amps over the years.

SOLID!!!

I do not own this amp, but I do own the predecessor and can only say it's still a fine amp! For the footpint, power output, and efficiency, as well as the price, you cannot beat this amp! Alpine quality and sound reproduction is almost second to none except for the extreme high end amplifiers (Zappco, Stetsom, etc.) but you will pay WAYYY more than this little guy! Dont understimate it!

better amps for the price

I really don't like giving products bad or somewhat bad reviews, but in this case I feel the need to. This amp has INCREDIBLE power. I truly love the sound of this amp; however, for the price, there are much better amps available. The biggest issue I have with this amp is the input sensitivity. The max input for this amp is 4v, which is decent for an above average system. If you have a stock head unit and want to run this amp, it requires an LOC like most other amps. For a little bit cheaper, I would recommend the Kicker 11IX500.4 simply because the FAIL safe integration and being able to run a high level input into the amp. Also the kicker has a pre-out for a separate amp incase you want to add a subwoofer. The kicker may only have 75 watts RMS @ 4 OHMs, but this is still PLENTY loud for someone looking for a clear, accurate amp. Of course these features and applications are not meant for everyone, but I just feel that if you pay this amount of money for an amp, there should be a lot more features. I do recommend this amp for anyone who is bias towards the Alpine brand, running this on an aftermarket head unit, and just wants a LOUD system. If that describes you then go with the Alpine. If you're like me and want to integrate with an OEM radio, then by all means look for a different amp like the example I gave of the Kicker IX500.4. Both amps are excellent, but the kicker has a lot more features and capability. I hope this helped someone out.

Sweet Amp

Tons of clean, crisp power! Great product

Better Than old school

Let me just start by saying I am very very picky..It take a great deal to impress me... okay... I was a custom installer for a high quality shop back in the 90's. I have done some very serious systems in my day. About 2 years ago I was looking to do a simple "low key" system in my new car. But I wanted it to hit hard and sound fantastic. Being I had been out of the Car audio loop for several years.. I was at a loss when I found out that ALL of the old school, high end, American car audio companies had bit the dust. Though some do still exist in name only... PPI, Phoenix Gold, Hi Fonics, ADS... ect...ect... But they are now Chinese made garbage. So on a recommendation from a friend. I took a look at the Alpine PDX series(Alpine has always made nice stuff). And let me tell you... These amps are BY FAR!!! The most musical, efficient, dynamic... And key word here... POWERFUL amps.. I have ever worked with. They are so far beyond anything I have ever seen... That even after 2 years... I am still amazed by these amps every time I fire them up. They are price wise.. In line with my "Old school favs" A PPI A600 and A404 I had in my 2 seat pick up back in the 90's.. But these amps are so far out of their league.. And that's saying A LOT!! If you are looking for state of the art... If you are wanting absolute car audio perfection. You will simply not find better. Alpine has really done something wonderful here. This line of amps are the simply the best the car audio world has to offer. Thank you Alpine!

Great amplifier

I admit, I was skeptical when I bought this amp because I wasn't sure if Alpine still made the same quality products they were known for back in the late 80s and early 90s. I was driving Alpine 6.5" Components in the front and 6.5" Coax in the rear of my F150. This amp never had an issue at any volume level. Crystal clear at wide-open volumes. I love this amp and am installing it in my new truck. Trying to figure out which components to go with. have narrowed it down to MMATS Pro Audio, JL Audio, and Sundown Components. All 6.5" component sets.

Alpine pdx-f4

Easy to install. It make my Radical Audio RF tweeter and AVI mid bass so perfect in term of sound. It's even better then my buddy running Bewith Amp using the same speaker. Totally rocks.

Beast of an amp

This amp is a beast compared to the cx300.4 kicker I had in my dodge dakota I can turn the volume really loud an it doesn't get hot at all not even after my four hour drive home from work would definitely reccomended buying this and I have it on two pair of jl audio evolution c2 600 x speakers and it plays really really lid and crystal clear although I have bushmeat for the speakers reccomended that too for better clarity of listening quality and rattles of door panels the bass is slamming for no subwoofer and the tweeters are bright at times may have to adjust your amp tuning

Awesome as Hell

I have this amp powering a set of Alpine Type R SPR-60Cs and and a set of Alpine Type R SPR-69s on a 2006 Harley Electra Glide and I must tell you I am beyond impressed with the clarity and mid bass. I dont have alot of bass because the 6x9s are in saddlebag lids as opposed to inside the saddlebags but the sound is just awesome. There is no need for the bass because I ride my HOG i dont post up rolling at high speeds is louder than the stock or upgraded audio that Harley has to offer and for a whole hell of alot cheaper. The sound is better, clearer and louder than the Harley 8 speaker set up that cost $1900 PLUS the cost of the lower fairings ($650) and the saddle bag lids ($120 primed EACH or $230 - $280 painted to match). This amp is very easy to install. A rookie can do it ease.

WOW

Powerful son of a gun.

Hold on

At first I bought this amp because it was low profile, even though it good specs. I put under front seat so I could put processor next to it. Got everything in and redid front amp for components & rear amp for sub. Did this with VOM because my buddies Oscope was being fixed. I thought would be close enough. Alpine is driving Hertz mlk165 & cdt 2" front fills & DLS 226 coaxials in rear. My HU is Pioneer 4300dvd and I can not get it over 15 out of 40 volume. Amp will run you out of car and never gets hot, no distortion, plenty of power & rocks. Install was easy, using 4ga wire all around. If you are looking for great amp don't hesitate to check this baby out. All my SQ buddies are impressed and they run Sundown, ARC & Audison.

Great little amp

I have this paired with JBL P650C 6.5" components in the front, and JBL P953 6x9's in the back. This amps pushes these speakers well enough to keep up acoustically with 2 JL 13w6v2's in the trunk. I'm planning on updating/upgrading my front stage to something better. I upgraded to this from the pdx 4.100 (old version, also a sweet amp). It does produce slightly better sound quality than the old amp, and seems to use less power while doing so. I don't think it would be worth upgrading from old pdx, unless you want to keep the old one for another car like me. In the past i've used lower wattage fosegate, jbl, (power series) and jl (slash series) amps in it's place, I like this amp far better than those based on footprint alone. SQ using my speaker setup is on par with the jbl and jl amps, fosegate was a little too boomy and muddy, but also cheaper.

Insane Power !

I have waited several months to write this review. Important details:
Vehicle = 2013 Chevrolet Silverado Ext Cab w/stock HU
Line Converter = Audio Control LC7i
Front Speakers = Infinity Kappa 60.11c
Rear Speakers = Infinity Kappa 62.11i
Sub = 8" Powered Sound Ordinance
The sound this system produces is off the hook ! The PDX is tucked under the rear bench seat and stays cool as a cucumber. The power it puts out is insane ! Outputs on LC are set at 3/4 with the PDX gains turned all they down ! You have to hear it to believe it. I can turn the volume up as loud as my ears can take with zero distortion. Talk about pure power. Alpine has nailed class D technology. So glad I ponied up for this amp.

Don't Look Any Further

Small, clean, sleek design.... I went through 4 amps before getting this one and I'm staying with it... Rated at 100RMS but certificate that come with it had it bench tested at 120 rms.... The power is strong and clean... This outperformed the cerwin vega, the mb quart, and the keenwood I had by a mile... Best mid-high amp I've ever owned... Have it paired with 2 focal 6x9s and 2 focal 6.5s... WOW!!!!!

By T. Moss on June 9, 2015 Verified purchase

Alpine PDX-F4

This is definitely worth the money. I am running two sets of Focal K5's on it and it runs nice. Not as natural sounding as I would like, guessing that is due to the amp being a class d. But, all in all nice amp.

Pro's- smaller footprint, runs cool under any load, and runs clean.

Con's- sound is not natural, price.