Search  for anything...

SoundBox SCAP2D, 2.5 Farad Digital Capacitor for Car Audio - 2500 Watts

  • Based on 2,426 reviews
Condition: New
Checking for the best price...
$39.95 Why this price?
Prime Day Deal · 33% off was $59.99

Buy Now, Pay Later


As low as $9 / mo
  • – 4-month term
  • – No impact on credit to apply
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

FREE 30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.


Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jun 29
Order within 1 hour and 37 minutes
Available payment plans shown during checkout

Protection Plan Protect Your Purchase
Checking for protection plans...

Capacitance: 2.5 Farad


Brand: SoundBox


Material: Aluminum


Shape: Rectangular


Maximum Voltage: 2.5 Volts


Capacitance: 2.5 Farad


Item Shape: Rectangular


Maximum Voltage: 2.5 Volts


Mounting Type: Pole Mount or Snap-In Mount


Upper Temperature Rating: 85 Degrees Celsius


Material Type: Aluminum


Brand Name: SoundBox


Warranty Description: 1 Year Manufacturer


Manufacturer: SoundBox


UPC: 859256005907


Part Number: SCAP2D


Model: SCAP2D


Unit Count: 1.0 Count


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jun 29

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Overkill but good anyway. Overkill but good anyway.
This guy is awesome. I got this thing and it is a bit overkill for what I’m using it for, but it does its job well. I used to have voltage drops low enough to literally bog my amplifier at kick drums. Nothing dims. It has an automatic turn off, so you don’t need to wire another remote wire. The size is a little big, but it’s a 2.5 farad so I’m not surprised. It gives out a fair bit of juice. I like it. ... show more
Reviewed in the United States on September 2, 2025 Reviewed in the United States on September 2, 2025 by Alex Hendrix

  • Good
Looks great didnt end up using it. My installer said I dont need it. Great quality
Reviewed in the United States on April 24, 2026 by ADRIAN I

  • Easy to hook up.
It works like a champ, I hooked it up to a rockerville 10-in tube speaker.
Reviewed in the United States on February 19, 2026 by Fidel Banuelos

  • Inclusive to positive
A capacitor will always be a must for car audio enthusiast. Best capacitor running my 400 watts 4 ch amplifier. The only thing I do not like is the harmonic distortion it produced…
Reviewed in the United States on October 8, 2025 by DonMchardy

  • Excellent
Excellent item fast chipping five star
Reviewed in the United States on March 7, 2026 by Michael Angelo

  • Kmt Kmt
Bought this but have not used it No threaded nut to to secure my ring terminal for the gauge wire I am using
Reviewed in the United States on June 2, 2026 Reviewed in the United States on June 2, 2026 by DABDOO

  • Definitely not 2.5 Farads, DO NOT BUY
I installed this cap for a JBL Club 5501 550 Watts RMS @ 2 ohms. Light still dim. This cap looks all fancy but does not perform, straight trash and that's where it's gonna go.....THE Trash
Reviewed in the United States on September 25, 2021 by Ray S

  • Broke in 2 months
Stopped working suddenly and the negative side connection is loose? Like the stud is loose and no there is no numbers even coming on anymore. Gonna ask for replacement or refund will update when I find out.
Reviewed in the United States on April 27, 2026 by Joe Palen

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...