4th item from sonic i have it on a skar vvx 12 was making my brights be dims and my dims look like a flash light hooked it up with 4 guage never drops below 12 v and im pushing 1000rms thourly satasfied everyone talks crap about boss went over kill and 5* came with mounting brackets and a diode very simple design yet works 5* also have it hooked up to my ignition wire works every time!!!! also it beeps when its 2 stressed big plus!!!! 5* in all points

I got this capacitor for christmas and have it running two rockford fosgate p3d2 2ohm subs and I love it. The light behind the digits is bright, but kind of adds to it. I have actually got several compliments on the way it looks as well.

It's built very solid and does its job like a champ. I enjoy many of Boss's products and this is one of the most valuable products you can install in your car.

At first it was working fine then i notice my lights started dimming after about 2 months. This Cap actually blew up like a bomb in my Jeep and my car wasnt even turned on. I wouldnt recommend this product.

I have a 3500 watt RMS system and this Cap handles the power draw with ease. I've notice substantially less dimming from my head lights and more powerful sub-woofers hits.

This cap is pretty big and does great with my 3k amp no more lights dim.

Easy to hook up.

great product and all, but on mines my display screen for me to read the voltage didnt work at all so i dont have a clue how much power is going through.....!!!!!!

The CAP4C is a very versatile capacitor. It took me several weeks to read and compare the Capacitor with almost every capacitor on the website. When I decided to buy the product. I have no regrets. My Bass is clear, thumpin and my headlights no longer fluctuates. (it has been my problem before I bought the Capacitor. ) My Mids are clearer and it enhanced the over all Sound quality. The best thing about the capacitor, I don't have top worry about the battery drain. Very Easy to install and easy to monitor with digital reading. This is one of the best Items I bought from Sonic, affordable and for purchases on line no problem even if I live here in Davao City, Philippines. Mabuhay Sonic Electronix!

This Cap rocks! my lights never dim now and it makes everything sound so much cleaner. but this Cap is HUGE! its almost the size of a 2 liter of soda. buts its an awsome deal and works amazing. Thanks Boss Audio and THANK YOU SONIC!

THIS CAP WAS WORTH IT AND TOOK IN SOME WORK.......... it helped keep my 15's banging

This was a really good cap i had no problems with it at all. Charged it right up and had it running and helping my lights not to dim since i was running so much power! Good buy!

its a great product.... its good for a small sound system you can get power from it........for me i thought i was a great for the price.......

in the pics it looks like about the size of a soda bottle or something and thats how long it says it is, but it is massive for a cap. it is more the size of between a 2 liter and 1 litre bottle of soda, but it gets the jobe done and does it well. it powers my 4000 watt power acoustik amp and powers it well. my dash lights and headlights never go dim. they always stay constant even while im bringin the juice.