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🔊 Power Your Ride with Precision & Pulse!
The BOSS Audio Systems CAP8 is an 8 Farad car capacitor designed to stabilize and preserve power delivery to your amplifier, enhancing sound quality and bass response. Featuring a bright blue LED voltage meter with ±0.1 V accuracy, audible warnings for reverse polarity and voltage issues, and an automatic sleep mode for energy efficiency, this sleek, platinum-plated unit mounts securely to ensure consistent performance. Ideal for audiophiles seeking reliable, high-capacity energy storage with professional-grade durability.



| ASIN | B001DXAVTS |
| Best Sellers Rank | #11 in Car Amplifier Capacitors |
| Brand | BOSS Audio Systems |
| Brand Name | BOSS Audio Systems |
| Capacitance | 8 farad |
| Capacitance Tolerance | 10 |
| Customer Reviews | 4.4 out of 5 stars 1,306 Reviews |
| Global Trade Identification Number | 00791489108973 |
| Included Components | Capacitor |
| Item Dimensions W x H | 2"W x 6"H |
| Item Shape | Rectangular |
| Item Type Name | BOSS Audio Systems CAP8 Car Capacitor - 8 Farad, Energy Storage, Enhanced Bass From Stereo, Warning Reverse Polarity Tone, Voltage Overload Low Battery Voltage Led |
| Item Weight | 3.7 pounds |
| Manufacturer | BOSS Audio Systems |
| Maximum Voltage | 24 volts |
| Model | CAP8 |
| Mounting Type | Rack Mount |
| Number of Items | 1 |
| Number of Packs | 1 |
| Operating Voltage | 24 volts |
| Part Number | CAP8 |
| Shape | Rectangular |
| UPC | 070992472758 791489108973 115970703926 880959961375 189326618691 999992669855 151903146163 100010956509 088020618207 100177400228 168141264320 806293548683 |
| Unit Count | 1 Count |
| Warranty Description | 1 YEAR WARRANTY |
M**K
Must have budget buy
Great product for the price.It serves its purpose works as it should
E**R
Does the job
Added this in on a 2500w dual 12" subs set up in my daily driver. Works as it should and gave me some wiggle room with tuning. My lights still dim a little bit, but that's other things that need upgrading. Looks nice too! Worth the buy. Will reduce light and cut out by a noticable amount.
R**O
Muy bueno
Quedo perfecto
O**R
So far these subs sound great. I have them set up for 2 ohms ...
I have had the system installed with 2) NEW Kenwood KFC-W3016PS 12" subs being pushed by the kenwood KAC-9106D 2000 Watt mono block class D amp and thus cap (boss audio cap8 farad). So far these subs sound great. I have them set up for 2 ohms and No issues thus far. Made sure everything was installed to specs and made sure all adjustments were within both the amps and the subs specs. I have the settings moderately low but when turned up it really hits. I installed with a zero gage power cable 4 gage ground cable and 12 inch speaker wires. I also have a custom enclosed fiberglass box with about 1 1/2 to 2 cubic feet in it. If I new how to post pics I would but I don't, so I wont. The cap came with instructions and west very easy to charge and install. The blue lights in the center look great. I still have a little dimming of the interior lights when amp is turned up and system is blasting at its max but not during normal music play at a moderate level. Ovarian all I'm happy with the cap.
J**1
Great quality and power for the price! Not just some knockoff brand!
Great price for such a high Farad Capacitor! 8 Farad provides a lot of wattage protection for your vehicle charge system. Installed in my 2018 Ford F-150 which has a 1000 watt JBL 5 channel amp and a Mono Kicker 400 watt amp for my subwoofers. Was super easy to install and first Charge with included resistor, has well made +/- hookup posts for the cables, and a very accurate voltage display to see the Capacitors voltage charge state. For being an 8 Farad Cap, it’s not very big whatsoever! Nice design as well. Even though truck has a strong AGM battery and powerful DC Alternator, I still wanted to protect all the high tech electrical systems in my truck. Not only does it prevent any light flickering/dimming when playing music loud. It also provides extra boost of power to my amps making my audio system sound even more powerful then it did without the Capacitor. My truck has a big 8” touch screen interactive radio display so I didn’t want to cause any damage to the system. I can crank up my system extremely loud and not worry about any headlight dimming or audio degrading. When purchasing a Capacitor you really have to do your research since there’s so many cheap no name brands on the market that really don’t do anything positive but it only hurt your audio equipment.! If your not careful, you really can damage your equipment doing more harm then good. For the price you can’t go wrong, and a good tip is to always over size the caps Farad rating so your helping your audio equipment and not hurting it.
M**Z
Beautiful and powerful
I used this with two 12 inch subs, four 6 inch speakers, and a six channel amplifier. I had a decently strong sounding system that I brought to cat shows and wins awards with. It kept the music bumping and looked awesome while doing so. Durable, powerful output, long lasting, beautiful design, definitely well worth your dollar.
T**E
Works like it should!
I installed it on my 4000 watt amp to run my six 12in subs. The resistor didn't work but hard charged it. My lights used to dim pretty good and my alternator needle would fall pretty far when the bass hit. Still flickers a little but one hell of an improvement! Had to turn my amp down it keeps the power to my amp when the bass hits hard. I like it but I think I need another one to go with it.
G**H
Dead battery
Worked well for about a year. After that it started draining my battery. After only an hour of driving, I couldn't restart my car at my destination. Once I got home, I disconnected the cap, charged the battery and no issues since. Stay away
M**S
Easy to install, good value.
This worked exactly for what I needed it for, so no complaints. It looks really cool with the blue lights on the top and I always get compliments everytime I open my trunk. Prevents my battery from dropping volts when the bass is turned up.
M**M
Excellent !
Alimente 1 ampli 1x1500W rms, frôlant les 100A, et un plus petit 4x50W rms de 50A sans problème...
R**E
Good
Good
H**Z
La caja venia abierta y maltratada, el manual muy sucio que parecía usado.
Envío muy rápido, llego antes de lo esperado por esa parte muy bien, en cuanto al producto no me gustó que llego abierta la caja, el capacitor estaba suelto no estaba sujetado como debía venir en su caja, el manual muy sucio parese usado antes y eso crea algo de desconfianza en el producto al parecer que ya fue usado.
D**R
Read instructions
Good
Trustpilot
2 weeks ago
1 month ago