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SoundBox

SoundBox ECK4v2, 4 Gauge Amp Kit - Complete Amplifier Install Wiring - 2500W

  • Based on 3,921 reviews
Condition: New
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$24.95 Why this price?
Presidents' Day Sale · 29% off was $34.95

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Returnable until Jan 31, 2026

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Availability: In Stock.
Fulfilled by Amazon
Arrives Saturday, Feb 21
Order within 12 hours and 41 minutes
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Features

  • Complete 4 Gauge Amplifier Install Kit
  • New and Improved Design with Upgraded Fuse Holder and Increased Wire Strands
  • Peak Power Rating: 2500 Watts
  • Includes Speaker Wire and Twisted Pair RCA Cables
  • Includes Installation Accessories and Wire Loom

Voltage: 12


Manufacturer: SoundBox


Mounting Type: Surface Mount


Brand: SoundBox


Number of Channels: 2


Package Dimensions ‏ : ‎ 11.77 x 9.17 x 3.15 inches; 2.65 Pounds


Item model number ‏ : ‎ 20ECK4v2


Date First Available ‏ : ‎ June 20, 2020


Manufacturer ‏ : ‎ SoundBox


Best Sellers Rank: #10 in Car Amplifier Wiring Kits


Customer Reviews: 4.6 4.6 out of 5 stars (4,079)


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Feb 21

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Price is right
Price is very good as well as the quality!
Reviewed in the United States on December 17, 2025 by Anthony Flammond Jr
    • Good for for the money - CCA 4 AWG
Better than I expected. Used this to install a 4 channel amp on a drift car. The power wire is CCA (Copper Clad Aluminum) which for this application was great because I didn't need a ton of power and it only weighs about 1.5 lbs (easily 10 lbs if pure copper). Fuse is kinda cheap but it does the job. Speaker wire is CCA so that should probably just go in the bin but even without that it's still a good deal. I wouldn't use this on a high end install but this kit definitely has its place and I was happy with my purchase. ... show more
Reviewed in the United States on March 26, 2025 by Consumer_Zero
    • Great product
Great product good deal
Reviewed in the United States on October 24, 2025 by Misty Shelton
    • Wires
Good bang for your buck, easy to put in. Only complaint I have is quality of the connections, they work but you get what you paid for.
Reviewed in the United States on October 25, 2025 by George b.
    • Excellent
Excellent
Reviewed in the United States on December 23, 2025 by Jose Carlos Reyes
    • Exactly what I needed.
Review Image by Jeff the Azon Customer Jeff the Azon Customer
Review Image by Jeff the Azon Customer Jeff the Azon Customer
Review Image by Jeff the Azon Customer Jeff the Azon Customer
I ran the amp kit and wiring, connected the amp and subwoofer, and was all set 🔥🔥🔥
Reviewed in the United States on December 2, 2025 by Jeff the Azon Customer Jeff the Azon Customer
    • Not my expectations
Only leaving 3 stars course my kit came without the RCA cables shown in the pic instead I got 2 bundles of speaker cords, not sure if that's how it was pre packaged or a mistake but other than that everything else from the pic is there and the cables are quality.
Reviewed in the United States on September 24, 2025 by Eva Vallin
    • Great product
Worked perfectly lasts a long time. It's been a good while and still works perfectly.
Reviewed in the United States on September 27, 2025 by Brandon

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