Customer Ratings & Reviews

good value

For a 1 farad capacitor it's a good product. The distribution cap makes ease of install versus a regular capacitor without one. The blue voltage display matches my setup currently. It does help with the power loss, but isn't enough for my 600w rms setup. For the money, features, and ease of install it's worth the money.

Big volts

My uncle big bubba got me this cap and I have no volt drop. I have some serious power I have a 25 watt system and this cap really helps a lot.

Solved my problems quickly.

Went from a junky Boss capacitor rated at 3 farad that broke to this one. Thank God. Seriously helps the dimming lights, quality made and looks sharp. The Boss one was all plastic and ridiculously looking and this fits nice in my car.

Great Product Great Results

I was impressed by the quality of this product. It supplies plenty enough power to my sub amp to offset my dimming light problem. Also fixed a spark plug energy shortage!

Nice looking cap

I have owned this cap for a few months now. It performs well. The best part is the charge/discharge device.
The volt display is not ideal for my purposes, but that is a small con.

Great cap

This is a great product. Have owned for about a month now and it just keeps pumping power to my amp. Everything stays stable and there is no dimming of my lights an its pushing a 1000 watt Hifonics hfi mono block. I would definitely buy again.

Great Product Great Results

I was impressed by the quality of this product. It supplies plenty enough power to my sub amp to offset my dimming light problem. Also fixed a spark plug energy shortage!

Works Great

Item works great, easy install, follow instructions for first use and you will have no issues

Exelent value

I purchased this NVX XCAP1F when I bought the rest of my audio system . I wasn't sure I would need one but with having a little Fiat 500 with a little battery and I am sure a bare minimum output alternator I put one in just in case . I am running a Boss CXX2705 amp that puts out 2700 watts peak and 1200 watts RMS so I put one in from the get go .I don't know if my lights would dim or not but with this baby there is absolutely NO dimming or power loss what so ever . This is a TRUE SPEC 1 Fared cap and made of the highest quality material .. I would put this up against any big name audio equipment out there , in my opinion it is built better then Alpine , Rockford Fosgate , kicker , ect.... , and is hands down the best value out there . Buy one , you won't regret it !! I have not cranked it up all the way yet because I am still breaking in my sub but at 65% of max volume it works without breaking a sweat '! NVX products are fairly new but are built perform !! ..Way to go Sonic for your superior product and service !!

fuccin aye

Well worth the money, go hard or go home!!! Only mess with the best

Awesome Kit!

Came With Everything described in kit. If Your looking to push that power to your system, This kit will do it! Worth Every Penny!!

NVX XKIT02

This is a nice wiring kit no doubt about it. Very sturdy and flexible, easy to work with. It is definitely true 1/0 cable and seems to be pushing the Hifonics BRX2000 amp I have with more than enough power. Rca's are also pretty nice and seem to be working as stated (no feedback or humming). I also like the fact that the battery side of the power cable is pre-sleeved and has the ring terminal already installed for you with heat shrinks as well. Same on the ground cable. Over all its a nice kit, might be a little pricey compared to other kits, but you pay for quality. Well worth the money in my opinion.

Fine Wire

Wires seem accurate. They transfer plenty power but I do have to upgrade battery to turn amp up more only running it at .25(1/4) and even then my lights dim front to back.

Nothing but the best!

A little heavy but my stereo system sounds great! Would buy this again!

Good kit

Comes with everything except rca cables, includes some terminals and boots, look for the bundle and save a lot

premiun

Very good quality and fast shipping, i recommended buy nvx products

Awesome

I got this kit to wire a boss 2600 watt amp. The wires were huge there was no way I could run it to my amp. The quality was so great that instead of returning it I used it to upgrade my battery cables and my chassis ground. I only wish it came with more ground wire as I need a few more feet to finish my chassis ground upgrade.

By Ace on June 24, 2015 Verified purchase

great kit

nice kit good quality but says in description 300a fuse but only comes with 150a fuse

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NOTE FROM SONIC ELECTRONIX:
300A Fuse sent to customer due to typo on our behalf. We also updated the description.

Good quality

I bought this cap to go along with my nvx amp and I also bought the amp kit. I really like the quality of the amp kit and and the price was fair on the amp wiring kit and the seemed to have a fair price as well but after I ordered the cap I found it on nvx web site for 59.99 and contacted sonic electronic by email and wa told they would not price match. That kinda sucks that that I had to spend 40.00 more for the same cap and it not like the price match was some off the wall website it was the manufacturer of the cap nvx I guess that teaches you do better comparison shopping but over the cap and the wiring kit were pretty good quality

By Jason on June 9, 2017 Verified purchase

Super Value

I've owned wiring kits before but this NVX kit put in great work, it has oxygen free copper that is flexable and put clean power to your amp. You will not be dissapointed this is a good value product.

Good product

Work as it should I haven't experienced any dimming win my lights it's a true 1farad cap. It has some weight to it so you know it's not chaplain made.

Nvx O- Guage Amp kit

NVX Amp kit is Pure Quality at first I was thinking it was a little pricey
compared to other kits I found online. I went ahead and ordered because it seemed to be best in quality, and sure enough. Awesome kit
I liked it so much I ordered another to rewire my other truck.
Worth every penny and then some!!

By Roysters74 on April 29, 2020 Verified purchase

Great kit at a great price!

This kit looks great! The wire is definitely true gauge, it measures at 16mm for the housing, and just over 12mm for the wire itself. Having the ends pre-terminated and shrunk guarantees a solid connection without having to buy special tools. The power wire is partially covered in braided sleeving which helps protect it in the engine bay. Fuse block is nice and came with a 150 AMP ANL ( not mini ANL as stated in the description) but no complaints here because that's better considering the amount of current traveling through it. Speaker wire is true 12 gauge as well. Overall excellent kit for the money definitely would recommend!

By Mike on October 29, 2015 Verified purchase

Great wire kit!!

This is one of if not the best value wire kits made. All of the NIX wire kits have the best quality wires and terminals. I have recommended this brand to everyone I know.

By Anonymous on March 13, 2019 Verified purchase

Great Kit!

Great kit! Highly recommend. Very high quality and true spec!

By Raul on April 19, 2018 Verified purchase

Best wiring kit!

Probably the best kit I've ever bought. Nice "true to spec" heavy cables but are very flexible and easy to work with. Comes with absolutely everything needed for a clean install. Only negative is the cover for the fuse holder can pop off easily. That is very minor and I would highly recommend this kit especially paired with the NVX JAD 1200.1 amp.

By Justin on May 31, 2016 Verified purchase

Bastante bueno

Es de Buena calidad ,ademas es super facil de instalar

Nice capacitor.

I installed this capacitor with 4 AWG wire and an NVX BDA7501 amplifier (4 ohm load, 480 W RMS). The voltage meter readout uses an internal comparator to sense a voltage change, which then illuminates the meter; It is not controlled by the remote lead, and therefore cannot be controlled by the user. This may be important for those with a hatchback that don't want a bright display randomly turning on and off in the back of their vehicle. Works great in my trunk though! No complaints really, just a clarification of its operation.
Included charge circuit worked well, and it installed without any problems.

By Joel on January 2, 2020 Verified purchase

Great wire would use for all my set ups

Good insulation rubber is soft and peels back fairly easy def use again

Awesome product!

these wires are simply amazing.. make damn sure you buy quality wire cutters!! i broke two wire cutters trying to cut it. lol

By tom on May 23, 2016 Verified purchase

Great buy

I bought these wire a little skeptical about them at first but after I got them I was relieved there everything I expected.

By Camilo on May 14, 2020 Verified purchase

Soo expensive and now I totaled my old car now I have a new car need to wait and save money.

Soo expensive and now I totaled my old car now I have a new car need to wait and save money

By mason on January 26, 2020 Verified purchase

Top of the line

This is some serious stuff! 100% OFC is worth the extra money.. Excellent quality wire,super flexible for 0gauge. ring terminals already attached with heat shrink and protective loom .beefy speaker wire and decent RCAs..

NVX XCAP1F

I cant say anything neg. or pos, about this product .install went great and everything is working well. I am not running a crazy amount of power just one lanzar opti hc 3502 and the main reason for getting a cap was just to support the overall electrical system. jeep/dodge are known for bad electrical issues. that being said we will see how long it last 1 month in now and no problems.

By brandon on January 22, 2017 Verified purchase

One of the good wire kits

Great wire kit. Great bang for your buck. A lot of extras definitely make it worth the money.

By FaceDa6 on May 23, 2020 Verified purchase

Excellent kit

Kit included everything needed. The quality is excellent. Couldn’t ask for better for the price

By Brian on October 31, 2020 Verified purchase

great cap

5/8/16. I bought this cap to help with my light dimming problem. I have a hifonics hfi 1000.1d. I had it wired at 2 ohms on a 12 cerwin Vega vmax. At 2 ohms my light stopped dimming. I then bought a 15 nvx to wire at 1 ohm on same amp. Let me tell you it hits hard. It helped reduce voltage drop, it helped stabilize my cars electrical system. Which reduces strain on your vehicle. But I will say at 1 ohm, when the bass is really hitting hard, my lights will dim slightly. Overall I'm satisfied with this product.

By Richard on May 8, 2016 Verified purchase

Son loves it

Placed it in his mustang to help combat the dimming headlights. Works for that, he thinks it looks cool. Good deal.

Great Product

I have to say NVX makes a great product. I would highly recommend trying this product, I've had no problems and its flexibility and high quality are a few of the reasons to purchase this product and see for yourself.

Great buy!

I got this about a month ago and it is great easy install and stopped my lights from dimming

Great Kit

So glad i ordered this kit. If you are going to be pushing above 1000 watts this kit is perfect, this was my first NVX purchase and I have since ordered 4 more. NVX doesn't cut corners and all of their products are top quality.

By STICKY G on January 22, 2016 Verified purchase

Good Purchase, no dimming lights!!

I was deciding between this NVX 1 farad and a Stinger 1 farad. I decided to go with this one because it was not only a better value but NVX brand like the amp(NVX JAD 900.5) I ordered. All of the NVX products have good reviews on SonicElectronix so I trusted them and decided to order. I am very happy with my purchase. This cap performs on the same level as Stinger Capacitors that I have owned in the past. I measured voltage at both outputs on my distribution block and voltage meter reads 14+ volts constantly. I have the NVX JAD 900.5 and a Rockford Fosgate P500x1BD connected to this cap. No dimming lights and system sounds very clean. I would definitely purchase this again if ever in need of a good 1 farad Cap. Thanks Sonicelectronix!!

By D. L. on June 2, 2016 Verified purchase

Great Cap!

I purchased the XCAP1F, by NVX, initially because my headlights were dimming when the bass hit. I am happy to say that the xcap did the trick. I would definitely recommend this product to anyone else having similar problems with dimming lights.

By Phil on August 16, 2022 Verified purchase

Awesome Product! WORTH IT!

My interior lights would dim whenever I would turn the steering wheel and felt like my car was going to turn off. This would only happen whenever I had the music/bass turnt up loud. I have two 12" JL Audio w3 with a hifonics amp 900wRMS @2ohms. I bought the NVX XCAP1F and never had a issue again. It even made my subs hit harder. I Definitely recommend this product. Set up was easy, the distributor block on top makes a difference. One thing I noticed is that when amp isn't drawing a lot of power, the blue LED voltage light will turn off. But as soon as you start to bass out, it'll turn on.

By DwOrD on July 6, 2022 Verified purchase

Great buy

Comes with everything you need. Easy to install with no problems. Great easy to bend wire even 0/1 wire flexed easily.

Sturdy

Great way to filter out any unwanted back feed from your sound system !

By Miko on June 6, 2020 Verified purchase

Perfect

Got this bundled in a deal with my NVX XAD14 amp, The wire is ultra flexible and seems over sized, I used NVX brand wire ferrules for a cleaner look and good connection at all points where I would otherwise had a bare wire connection.

I really love the fuse holder, just be sure if you are installing sideways like say on a fender well you mount it with the side screws for the power wire facing where it’s easiest to access. I mounted mine to the fender with liquid nails LN-2000 and two #8 x 1/2 stainless steel screws after double checking it wouldn’t interfere with hood structure or anything else and drilling a pilot hole for the screws.

I really recommend you get the install bay firewall grommets for this size just in case, they are absolute life savers. My best option was to run powerwire though the passenger floorboards firewall and they make me confident that I will have zero water intrusion.

By Frank R. on July 7, 2023 Verified purchase

Seems good quality

Seems good quality and flexible. The reason I gave it 4 stars under features is that it comes with a 12 awg speaker wire. I used 10 awg.

By Kyriakos on February 22, 2023 Verified purchase

The real deal

The amp kit didn't feel cheap & lightweight. True to spec.

By Gerard on March 16, 2022 Verified purchase

great product

i bought this nvx 1f capitor and i put it on a sundown 1,000 watt amp and with optima yellow top battrey and i have no volted drop the volts stay at 13 volts and high volume

By david on November 22, 2020 Verified purchase

Amp wiring kit

Just as good as some of the big name brands. I’ve had it for a few years and it’s holding up very well. I’ll buy it again. HEAVY DUTY.

By jaimie on March 7, 2024 Verified purchase

Premium OFC Wire

NVX makes some of the highest quality wire on the market today. I'm a lifetime customer.

By Christopher on October 10, 2024 Verified purchase

Great product

Great product very flexible and very good wiring kit

By Eustace on March 23, 2025 Verified purchase

Best bang for your buck

I did a lot of research prior to buying this kit. I also bought 20 ft extra of NVX 1/0 to do the big 3 upgrade. Considered GP or one of the other well known competition audio businesses but couldn’t pass this up for the price during Black Friday. The quality of the wire is great and even the fuse in the amp kit seems like decent quality. Having no issues sending power to my amp (Kicker CXA1200.1) and get very little gauge dimming on a stock battery and alternator. I know when I upgrade my system to something bigger it’ll handle it no problem too.

By DanGambleGrit on January 6, 2025 Verified purchase

Very nice product

It looks really nice in my

By Andrew on November 28, 2024 Verified purchase

perfect wire harness

Perfect wiring harness as everything I needed good quality better than expected

By Jonathan on January 31, 2026 Verified purchase

High quality wiring kit!

I received this kit for free, it was a promotion with the purchase of an Audiocontrol LC-5.1300 amplifier. It is my first time dealing with NVX power wire. The kit is of very high quality, from the power and speaker wiring itself, to the pre-installed nylon mesh, power connections, and the fuse holder. This kit makes wiring easy and straight forward. It’s easy to see that there was some good effort placed on the placement of all the pieces along the wire run. Another positive is that the wire fits easily into 0-gauge connections. In the past, it could be very frustrating dealing with wire that was bigger than spec. I get the whole “you’re getting more”, but I’d rather have a wire that meets the spec or maybe a little over, but not so much that it takes away from easily fitting into the connections. From this point on, I’m sold on NVX power wire. I will be looking at them for sure for my future builds.

Side note. I did not use the RCA’s, so I can’t comment on them, but seeing the quality of the kit itself, I wouldn’t be worried about using them.

By Juan on November 14, 2025 Verified purchase

Amazing Amp Kit!

This OFC 0 gauge kit was used in my dad’s Buick wagon for his 4500 watt amp and it smacks with his 4 10” NVX v3 subs. Even he tells me he’s never seen wire so perfectly priced without hurting the bank!

By Carson on March 28, 2025 Verified purchase

NVX XCAP1F TRU 1Farad digital capacitor!

Thank u sonicelectronicsThis capacitor is very good keeps my stuff at 14.2 it might dip a little bit not much and it helped out with other stuff in my car it keeps up with with my subs and amp it helps out way better than the ones I had in the past i’m running 2 Rockford Fosgate P3‘s with 1000 W stinger amp and a pioneer CD player and a scar equalizer and the Bose amp that’s in my car dang does it scream and bumps what do the kids call it it SLAPS!!! I like all music heavy metal, rap a tiny bit country but it keeps my car banging some times my ears are ringing after bumping so hard I like to fill my music not just here it
The only con is where I live if you want something nice you have to order it and shipping is not cheep
Up date after I charged my car battery to full man dose thiss thing help OMG!!!!! my 12 never hit so hard it’s making the needle on my RPM gauge bounce like crazy I might orde a nother one or just get the 10

By Dustin on January 8, 2025 Verified purchase

Caps are they worth it

I have to say there alot of cap on the market. And there all different brands. Are they worth it yes and no. If your borderline on your setup I definitely highly recommend having one and make sure there actually install right. If your way over what your alternator can handle then no it won't help. Connections on this is absolutely perfect there charge and discharge piece makes life easier than back olden days. It's design is perfect for what it's use is. My setup was small I figure what heck I give it a try haven't had headlight dimming problem or abnormal voltage drop.

By michael on December 7, 2024 Verified purchase