Customer Ratings & Reviews

Absolutely Gorgeous

After having an unnamed Maxxsonics made 4-channel heat itself to death on me, I opted to bite the bullet and mate this to my Kappa Perfect 6 and Reference 6830cs speakers. One word: Amazing.for an amp that is literally, half of the size of the amp it replaced, it pushes twice as much power and is still cool to the touch. Sound quality was the primary purpose of my build, and it more than meets my needs.

Also, it looks beautiful.

Kappa Four

Amazing power on a compact design. Sound quality is outstanding!

Great!!!

I have had the amp for 4-5 mouths. No problems or issues. I would buy it again!

Dissapointed

I spent a while looking for a good 4 channel amp to buy and I saw that this amp received good feed back. After having it in for almost a month, it blew on me. Now before you say I had my wiring bad, no, I had a solid ground with full contact, proper sized power and ground. I've had problems with the amp to what I was suggested it to be as clipping. I had the voltage input at about half and the vibrating from the speakers stopped and to add to that, the fuses didn't blow, the amp did, non of the protections worked. Maybe I just received a bad amp, but I surely won't be buying anything from Infinity again.

Awesome Piece

Powering 2 - 10" Kappa 100.9W's in bridged mode in an extended cab GMC pickup, tri-amped with active crossover. The sound is crisp, clear and as loud as you want it to be, but be prepared to upgrade your charging system - this amp will give your alternator a workout. A joy to setup, all settings are easy to configure and no tweaking was necessary after initial setup. The sound is fantastic, with no coloration audible. Highly recommend this amp to anyone looking for a clear natural sound. Sonic Electonix was great to deal with and any future purchases will definitely be through them.

Great Amp

The amp is great. It has fantastic sound, lots of power, and is easy to install and set up. The frequency response is good and it is easy to make adjustments. I am very happy with this amp.

Amazing

This amp is solid!! If the missing piece of your puzzle is an amp then look no further. I dont brag on shops often, but Sonic is the place to get your stuff. These guys know their s-it!! I explained what I had and what I wanted and they got me what I needed. I will definitely purchase from them again.

Kappa Four

Absolutely everything I wanted in an amp, plus a power rating that is very conservative. It is small, powerful, clean as crystal, has the right adjustments, and is very robust. You can use the front two channels to push all the speakers you want, and bridge the back two for a really conservative 300x1 @ 4ohm. I swear this back two channels bridged has driven my 2 4ohm jls (2ohm load) as well as my Kappa monoblock (rated 500rms at 4ohm). When set up in the livingroom against other considerations for my mids and highs, going from my other amps to the Infinity showed just full and musical the Infinity amp is compared to some lesser brands. Best I have owned, and it is not the most expensive I have owned.

Kappa Four

Had a powerbass amp before this one and the Kappa Four is definitely worth the extra $$. 2x cleaner and has extreme power for the compact design. Definitely enjoy the controls on the faceplate considering it is mounted on the back wall of my f150.

Great amp

The sounds is clear and crisp, love this amp. Much better than the MTX 4004 that I originally had. Does not cut out and runs quite cool.

A1 Everything

Sonic Electronix is awesome and this amp kicks *** I own 2 and my mids and highs rock

Great amp for a Great price.

I use this to power my Infinity Kappa series 6.5's & 6X9's.
And it does an incredible job of it.
Small size, big power, sleek design, Infinity is the only way to go
for your mids and highs.

The Best!

I have always been an Infinity fan and these Kappas coupled with the Kappa 4 amp absolutely rock! They are so clear and clean that you hear things in the songs that you may have never heard before. They can handle more volume than your ears can. The highs are ear shattering and the mids are tight. Just add a sub and you will be all set!

Cleanest sound possible

I upgraded to this Amplifier from Harman CA470 and I must say that the difference in sound quality is huge.. Highs/Mids/Lows all were perfectly blended into the air and smooth as silk. It has got better ref. SNR and is able to deliver more power consistently without overheating. I usually push my Amplifiers to their limits causing them to shutdown for protection sometimes, however I've not been able to shutdown this Amplifier even after my wildest efforts, thanks to Class D circuitry. Looks wise I would say, I found it average as per my taste, but who cares when Amplifier has to sit in the boot and just has to sound good, that is its primary job. The separate Bass booster lets you tune it to get more bass out of the system. But just as an advice, make sure that the connected speakers are of very good quality, as average quality speakers/components will be of no use with this state of the art Masterpiece.. I'm lovin it and I don't think I will ever be able to replace it as an upgrade..

Infinity KAPPA FOUR

Excellent amp, a little tempermental with mounting and power source. Car alternator supplied too many volts and would kick offline. Rerouted power to remote battery cured problem.

Strong,Reliable, crisp sounding amp

I have been pushing this amp for more than a year straight without any problems. sounds amazing!

Good amp

This amp was good working, but it messed up so SE hooked me up with a better amp! I would still recommend this amp.

Could not ask for more........Well woth the money.....

I bought this amp around 2 months ago from Sonic for $309.00 and it got quite hot but never shut off. I will say that I had it lying on the carpet in my trunk and carpet does not dissipate heat at all. The bottom of the amp is heavy thick metal more so than any amp I have seen. So the bottom acts as a heat sink as well it seems. I wound up mounting it (vertical) with 1.5 inch stand-offs from the carpet on my sub box and installed a squirrel cage fan (65CFM) from Sonic and she now runs warm to the touch. I did not rate this amp until I felt comfortable with the fact that it can measure up and not shut down when pushed. I have had a few other amps in this vehicle and they would shut down. My system consist of 2 10” Polk Momo subs powered by a MTX JH600 amp. I installed Infinity Kappa 6.5 components in the front doors and Infinity Kappa 6X9 coaxial in the rear. My head unit is a Pioneer DVD 3200. I also installed a 1 fared cap as well. All power and ground leads are four gauge. The total watts are just shy or 1300rms. I recently went on a 7 hour trip and ran the volume at moderate to high levels and I must say that this amp kicks butt! I cannot say how happy I am with it. I like my music loud and clear and this amp does both effortlessly. I cannot even turn it up too much because I am afraid that it will damage my ears! The highs are unbelievable as well as the midrange and bass. I have to set the EQ highs on the head unit to neutral. I will say as another reviewer stated that you better outfit this amp with high quality speakers otherwise you are wasting your money. You should always put more money in speakers than the amp anyway this is my belief. The setup instructions are clear and to the point. It is also nice having the controls on top of the amp. It has a small footprint, but is quite heavy considering this fact. When and if this amp dies, there is only one other brand that I would consider and that is Rockford Fosgate or another Infinity amp. I hope she goes the distance because I love it! I promise that if you buy this amp you will not be disappointed!

Infinity KAPPA FOUR

Smallest amp ive ever owned. I have to put all my amps in a tight space n this amp is ideal for the operation. It has good thermal control and thats good cuz i use every ounce of power this thing has n its in an unvented space. Good quality. I like the way the tuning options r set up. Very user friendly.

excellent

This amp will blow your woofers, perfect match with infinity´s kappa perfect 6.1. Great view

Great Value

These ring terminals are very good quality for the price.

I would buy these again.

Works good

The rubber part doesn't hold it on the greatest but with some electrical tape works perfect and very cheap.

Awesome

Had no problems with these terminals. Easy to crimp, and solid connection. Also, very cheap compared to other places! Would recommend!

e2 ERTC4-4 by Scosche

I bought the product for my son's truck. The product seems to be working well with his truck. We haven't owned the product long enough to tell you whether it will last or not.

Great

They are true to gauge and they work perfect no cons just plug and play

great buy

i have this hooked up to my kicker zx1000.1 amp that powers my 2 L5's. GREAT BUY

Quality Ring Terminals

When i got these i slipped my wire in installed it in my car and was done. no problems works like a charm. good value.

Work like they should

They are strong and easy to work with. I just ordered more of them to use for my car.

Great Value!

I have used this amp many times for the past few years. Its compact size and performance make this amp a great choice for your 4 channel needs

Good Terminals

These are some good terminals, but are hard to solder, so please Sonic sell proper solder ring terminals.

Did the job

Nothing special, did the job. Quality as expected for the price and crimped well. Soldered well, and the jacket is good quality.

They're OK

If you're using them in the cab, this are probably fine. I used them in my engine compartment. I had to take off the crappy plastic covers and use heat-shrink tubing to get what I wanted done and ensure they would last in my engine bay. The plastic is pretty weak, and the metal rings are just OK.

actually 2 gauge

I don't know if I got a bad batch or not but these connectors are way too big for 4 gauge wire. They fit better on 2 gauge wire.

Hi Quality Wire....

I used this kit to install a Hifonics amp in my grand cherokee.
The quality of the wire is very good and flexible.
However the 4 gauge wire postive wire has a built in connector on the battery end that has a whole that is way too small for putting a side post bolt through... I had to grind it out to the correct size. That is my
only gripe. I would recommend this product anyway.

4 guage terminals

These terminals made connecting my capacitor really easy. Would definitely buy again

works

I didn't have a big enough crimp so I just used a hammer to hit it into place on top of cement or a metal object.

Good quality and price

Very happy with the connectors, found them to be good quality during installation. Would most definitely use them again.

PA600 with 4 DXi650

I used this kit to put a Polk PA660 behind 4 DXi650s. The kit is beautiful! The fuse box is awesome. The 4G hot and ground wires are flexible and are very high quality. This kit contains some of the best speaker wire I have seen. I didn't need to use the speaker wire it in my 07' Civic, so wired my 3 year old's Cerwin Vega D5's with it in her room. The RCA's are nice looking and now my car set up is wired professionally from home! I chose the 4G over the 8G so I could split the wire to 2-8s in the trunk for 2 amps later.

def worth it

After looking at a few kits I decided to go with this one. The price was a little higher than most but omg is this stuff great. its extremely flexible, provides a vast amount of power to your system, looks cool, and sounds great! lots of copper stuffed in these things. Highly recommend it

works

They are ring terminals, they do what they do....what else is there to say...

e2 ERTC4-4

Does what it is supposed to.

Best

Very good!!!

Great Value

Quality product , good price and shipped fast.

heavy duty product

At first I thought the price was a little on the high side but when I opened the package I was impressed with the quality and amount of product delivered. I felt I got good value for my purchase.

All you'll need for a 4-Channel Amplifier

I'm very happy I chose the Kicker Amp Install Kit with RCAs. High quality 4 gauge that not only does the job but looks real pretty under the hood. That Fuse holder with 100 amp AFS fuse is no slouch either.

Best amp kit I have ever owned!

The cables that came in the palate were of the best quality I have ever owner, the length of the cables were more than enough for any at home, normal installation. I have an 02 ram 1500 extended cab and was able to run a power an ground to my capacitor and had enough cable left over to use the cables from this package for the power and grounds on two more amps. I still have left over remote cables and the RCA and fuse block were amazing. I recommend this kit to anyone who wants to run great deal of power the right way.

good price

not much to say just that they work great

Heavy Duty

Has all you need to install an amp and is good quality product.

Good, but make sure you have what is needed to bend them

These work great... if you can bend them correctly. you need more then just a pair of pliers to get them to stay on 4 gauge but once you do get them tight they will stay for a long time. I've had mine for 6 months and they are working great.

Plenty of cable plus more!

I bought this kit to pair with my Kicker IX500.4 amp, and it works as should. I even had about 8ft of power cable left after my install. I would recommend this kit to anyone who is installing an amplifier in their vehicle.

great price

good connectors good price highly recomend

Get the job done

These are cheap, they work well and really last forever.

worked as expected

these work as expected. easy to install and was priced right,

Very pleased

They worked great. Easy to work with. Only prob I had was the holes where not big enough. Had to bore them out. Still very good for the price

Product worked great.

Shipping was timely, product was as advertised, phone help with ordering was great, product worked great.

Great Buy

Good quality connector, but the wire covers seem to be a little bit oversized.

Ring Terminals not much to say they work like they should

I like em, they were easy to crimp I used a table clamp works best and sinze soldering fail I melted the wire surround to help it adhere

E2

This ring terminal work very good when connecting your 4 gauge wire to any battery.

Nice Look

These are nice terminals, why pay more. They work just the way they are supposed too. Solid Product.

Great Value

May not be name brand but definitly good quality and hold up real well would recommend to anyone.

excellent and cheap

Yep had this worked great, used it to hook my cap to my amp, very easy to crip and seem to be made of good quality. Oh yer price is great too.

GREAT ITEM, GREAT COST!!!

Work great easy to crimp how ever if you dont crimp them tight enough the wire can easily slip right out so make sure you do it right or you'll have lose wires all over!

great product

good product for very cheap. very durable

Nice and fat

Power wire fits easily in and stays in. Fantastic value, and very nice looking!

Good value, can't ask for more.

These are as nice and work as well as any ring terminals I've ever used, at a very good price. Several different brands of 4ga wire all fit fine, no complaints.

Good and durable

You can crimp these with a pair of channel locks but go the extra mile and get a butane torch, some flux paste, and solder and solder your power wires for better conductivity.

Great Ring Terminals

Great quality terminals. Could be cut and bent without breaking. I ended up soldering mine with a torch

good product

Good item fast shipping great price looks great Sonic is the most reliable company.

easy to use, best bang for buck

super easy to crimp and solid terminal. no problem in using these puppies!

This product is good to go

Used these on a cap install and it worked as needed. I would buy these again.

By Anthony on August 16, 2015 Verified purchase

good buy!

I bought these a few months back for my NVX 0 guage wiring and it is still holding up just as tight to this day as good as it did the first day i bought them!

Great Product

I used this on a RV to but in a video/audio system and I really liked the amp kit. Nice a heavy wire and the fuse was nice heavy plastic. You will never go wrong on kicker, so I would tell any one to buy this. I'm thinking of upgradeing my wire to this down the road.

Kicker ZCK44

This cables were more then what I expected the Kicker cables are very flexible and easy to work with specialy if you put all cables under the carpet and seats overall very durable and flexible cables highly recommend

Awesome Box

Great sound, good fit what else is there to say, Sonic Electronics great place to buy from

Out of the many I’ve tried it’s #1

I’ve had many amps in my truck. From Boss to Rockford Fosgate Prime and Power series this Infinity Kappa amp has exceeded my expectations. It’s very clean and powerful. Has never gone in to protect mode or had a single issue. I’d buy again.

By Robb on March 2, 2022 Verified purchase

very nice

i got this free with an amp i purchased but i already had kicker wiring in my car so i put this in my brothers car without him knowing and the next day he was wondering why his bass was louder!! this wire is silver tinned copper and is silver in color

Kicker ZCK44

Excellent wiring package. Used it in my car this summer and had plenty of wire to run from the battery to the cabin. Would highly recommend this product to someone looking for a good wiring package!

Kicker Wiring Delivers a Kick

I got this Kicker wiring kit to hook up my Pioneer deck, speakers, and amp. As a Kicker home entertainment speaker owner I had high expectations for the quality and performance of this kit and Kicker once again blew me away. I had more than enough supplies to wire up my Ford Ranger twice. I will be going back to Kicker to wire up a sub down the road.

Great Kit

Complete, easy to install, great value.

Nice wiring kit

This kit came with everything that I needed to install my 4 channel amp. It cost a little more than I was looking to spend but was very well worth it. All of the components were very high quality. Even the speaker wire was very nice; something that is usually over looked. Definately worth the extra money to get instead of the lower priced off-brand kits.

great kit

This a high quality wire kit. the wires are wet noodle flexible. I am completely satisfied.

Kicker ZCK44 (09ZCK44)

These are awsomes sounding speaker. You can not beat the price. with all Kicker items the quality is awesome.

Junk

Used it for one weekend before it fried!

very nice kit

Nice flexible cable, good ends, overall great kit!

Great Sound

These are great for any kind of subwoofers. It has all the wires and hook ups that I needed included.

Good terminals

Just what I needed to hook up a vintage audio control esp2

By Chad on September 15, 2017 Verified purchase