Customer Ratings & Reviews

Frickin' Love This Amp

I had this amp on many speakers. Had it 2 12" L5's and it sounds amazing. But once i hooked up 2 15" L7's it was loud as Fu**. I love this amp, i would recomend it!

Nice Amp

This amplifier is nice, I have it pushing one alphasonik psw915 and soon two psw915. These amps are powerful, my friends are offering me money to take it off my hands, and I might take the offer but the 5500D gorilla version just for the extra power. But the 4000D is a strong solid amp.

Does the job it was meant to do

This thing puts out the perfect amount of power for my subs which are 750 watts RMS. Before this, I had a MB Quart Discus 2000.1 and that thing put out insane power way too much for my subs. I think this amp is great and puts out a lot of power. Very satisfied with the purchase.

Great Value!

Couldn't be better for the price. Provides a ton of power. No complaints.

spl 4000d james a,lafayette louisiana

this amp is sick, i have it pushing my 2 alpine type r 15s, i have them at 1ohm pushing about 1800 too each sub....and it slams ridiculous hard, if you want a danm good amp for dirt cheap get this......its well worth 300 dollars

Great Value!!!

I just bought this amp and it is a very great product and cheap I recommend it puts out alot of power

Excellent Deal

I didn't order this product for myself. The person I did order it for was tired of the over priced stuff sold locally. He bought this amp to drive an 18" power hungry sub and not long after installing it he had people lining up to actually buy the system.

Best Buy.

I JUST RECENTLY BOUGHT THIS AMP... IT HAS BEEN.. BY FAR THE BEST AMPLIFIER I HAVE OWNED. I HAVE IT PUSHING ONE 15" KICKER SOLO BARIC L7. IT POUNDS SO LOUD LIKE YOU CANT IMAGINE.. I RECOMMEND THIS AMP TO ANYONE THAT IS LOOKING FOR A GREAT AMP. FOR A GREAT PRICE.

SPL FX1-4000D

This amplifier is one of the best made by spl. It is very nice, clean, no faultiness and I must say does an awesome job on your bass line.

Lots of power

I am using this to power an SPL W15. I have plenty of power on reserve if I ever switched outre wanted to expand. Just remember to install a relay switch to make sure you have a strong signal going to the amp. I took up all the space in my trunk with a custom box and fastened the amp to the box. It seems like it is built strong and to last. I do not have a cap, but did install a red top optima and have an alternator that gives 180 amp output. I have very minimal headlight dim.

SPL and Alpine 1223D

4000 watts what more can i say, amp sounds good wit some nice features, recomended.

its okay

I recently bought a spl amp and it was dead on arrival so i sent it back and it is just about impossible to tune it just right i will never buy anything spl again it is cheap crap when i can go get a hifonics for the same price. You get the same out the hifonics 2000 watt that you do this 4000 watt so i would not recomend this to anybody.