Make your amp run more efficiently with car audio capacitors. Find a wide selection of cap sizes including 1, 2, 3 and 5 Farad.

Capacitors

Car audio capacitors are a great addition to any aftermarket audio system that is in need of a little extra power. Capacitors store a temporary electrical charge that can be released during periods of extra power strain. If a vehicle has dimming headlights when music is played, a capacitor could solve that problem.
Get The Right Capacitor
Reduce the strain on a vehicle's electrical system.
Read Guide
1 - 1.9 Farad
2 - 2.9 Farad
3 - 4.9 Farad
5+ Farad

Top Sellers in Capacitors

True 1.0 Farad 20V Capacitor with Digital Read-out, Built-in Distribution Block

• For Systems Up To 1200 Watts
• Bright Blue LED Voltage Display
• Improves Bass Response (SPL)

50% Off XCAP1F 1.0 Farad Capacitor with Amplifier Purchase

$99.99

IN STOCK

2.0 Farad Capacitor with Digital Red Display, Perfect for systems up to 2000W

• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

$29.99

IN STOCK

Digital Capacitor 3.0 Farad Distribution Top

• 3.0 Farad Digital Capacitor
• Voltage Meter
• Impact Resistant Polycarbonate Cover
• Simple Mounting System

$59.97

IN STOCK

1.0 Farad Digital Car Audio Capacitor

• 1 Farad Capacitor
• Red Digital Voltage Display
• Perfect for Systems up to 1000 Watts
• 18 Volt Surge
• Silver
• Includes Mounting Hardware

$28.99

IN STOCK

Only 3 Left!

10 Farad Capacitor with Digital Voltage Display and Blue Illumination

• 10 Farad Digital Hybrid Capacitor with Blue Illumination • 3-Digit, super bright LED voltage meter
• Voltage measure accurate to +/- 0.1VDC
• Blue illuminated window
• Warning tones for reverse polarity connection, over voltage (>17VCD), or low battery voltage (<10VDC)

$59.99

IN STOCK

Only 1 Left!

5 Farad Pro Digital Hybrid Capacitor

• Digital 5 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

$121.99

IN STOCK

1.0 Farad Capacitor with Digital Red Display

• 1.0 Farad Power Capacitor
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

$22.99

IN STOCK

Energy Storage Reinforcement Capacitor with LED Voltage-Display

• Hybrid 1.0 Farad Digital Stiffening Capacitor
• Increases quality of sound
• Platinum plated
• Solid brass top helps reduce stripping

$99.99

IN STOCK

Energy Storage Reinforcement Capacitor with LED Voltage-Display

• Increases quality of sound
• Increases level of bass
• Platinum plated

$139.99

IN STOCK

1-Farad Capacitor and 4GA 2 Channel Amp Kit (Red)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

$57.99

IN STOCK

List price $149.98: BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42BK Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit (Black/Grey)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

$57.99

IN STOCK

List price $209.98: BAK02 Complete 0/1 Gauge Amplifier Wiring Kit with RCA Interconnects + BB2D 2.0 Farad Capacitor with Digital Red Display

• 1/0 Gauge Complete 2-Channel Amplifier Installation Kit
• ANL Fuse Holder With A 150 Amp ANL Fuse
• For Car Audio Systems Up To 1500 Watts RMS
• Premium Powerflex Power And Ground Wire
• Helical Twist Construction Audio Interconnect RCA Cables
• 30% Copper CCA Wire
• 2.0 Farad Power Capacitor
• Perfect for Systems up to 2000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

Limited Offer: 15% off a Belva Wiring + Capacitor Kit!

$66.24

IN STOCK

List price $149.98: BB1D 1.0 Farad Capacitor with Digital Red Display + BAK42 Complete 2-Channel/Mono 4 Gauge Amplifier Wiring Kit

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• 1.0 Farad Capacitor
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS (2000 watts MAX)
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire
• Perfect for Systems up to 1000 Watts
• Audible Warning
• Red Voltage Display
• Mounting Brackets Included

$57.99

IN STOCK

Energy Storage Reinforcement Capacitor

• 1.0 Farad Capacitor
• 16V to 20V peak
• Solid-brass top reduces stripping; platinum plated
• Increase the peak power of your amp
• Reduce dimming headlights

$71.99

IN STOCK

Hybrid Digital Stiffening Capacitor and Distribution Block

• 10 farad Hybrid Digital Capacitor
• Increases quality of sound
• Increases level of bass
• Platinum plated

$213.99

IN STOCK

1 Farad Capacitor and 4GA 2 Channel Amp Kit (Blue)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

$57.99

IN STOCK

10 Farad Pro Digital Hybrid Capacitor

• Digital 10 Farad Capacitor
• Bright Red LED Voltage Display
• Monitor System Voltage
• 12-16 Volt Operation / 18 Volt Surge
• Louder And Cleaner Bass Response

$149.99

IN STOCK

Only 2 Left!

1 Farad Capacitor and 4GA 2 Channel Amp Kit (Black)

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer
• 30% Copper CCA Wire

10% off a Belva Wiring Kit and Capacitor with Amp Purchase!

$57.99

IN STOCK

List price $329.98: RFC1D Hybrid 1.0 Farad Digital Stiffening Capacitor + RFK4I 4 Gauge Power and Signal Installation Kit

• Hybrid 1.0 Farad Digital Stiffening Capacitor
• Increases quality of sound
• Platinum plated
• Solid brass top helps reduce stripping
• 4 Gauge Power and Signal Installation Kit
• 100% Pure Crystal-Oxygen Free Copper (PC-OFC)
• FULL Spec Cable Meets or Exceeds AWG (American Wire Gauge) Requirements
• Includes Appropriate Wire Termination Hardware

$169.94

IN STOCK

Capacitors Information

Car Audio Capacitors:

A car audio capacitor is an electrical circuit element used to store charge temporarily. This should not be confused with a battery, as a cap only temporarily holds a charge. It generally consists of two metallic plates separated by a dielectric. It is also used as a crossover component to filter out lower frequencies and allow higher frequencies to pass.

Audio capacitors charge and discharge very fast, stabilizing the voltage to the amplifier. Stabilizing the voltage helps the amplifier stay cooler and run more efficiently because the amplifier is not straining to get the power it needs. Stabilizing the voltage helps an amplifier reduce distortion and produce more power consistently.

A farad is the measurement unit used to determine the size of a capacitor. One farad to 500 watts RMS is the ratio used to determine the size of capacitor needed to supply enough power to an amplifier. While using a cap much larger than recommended will not damage an audio system, it is not recommended because of the unnecessary strain it puts on the vehicles electrical system.

Which Capacitor Should I Get?

Installing a capacitor is a great way to help stabilize the voltage being sent to the amplifier. This can help reduce the strain on the vehicle?s electrical system, reduce dimming lights, and improve sound quality of the audio system. Since each car is different and unique, knowing which capacitor is best for your system is important to know. As a general rule of thumb, Sonic Electronix uses the following information as a guideline for selecting capacitors:

Capacitor Farad RatingTotal System Wattage
Under 1 Farad0-499 Watts
1-1.9 Farad500-999 Watts
2-2.9 Farad1000-1499 Watts
3-4.9 Farad1500-2499 Watts
5+ Farad2500-Up Watts

To find out more about car audio capacitors, call our friendly support team at 1-661-257-9993