Rockville RFC30F 30 Farad Capacitor w/ Voltage Display+Dual Amp Kit

$418.99 $164.90 Save 61%
Shipping calculated at checkout.
Product Description
Package Includes:
  • (1) Rockville RFC30F 30 Farad Capacitor Blue Voltage Display
  • (1) Rockville RDA0+4K 0+4 Gauge Dual Amplifier Installation Multiple-Amp Wire Kit

Video of RFC30F:


Have you noticed your headlights dimming to the beat when you hit those heavy bass notes on your car’s custom sound system? Cranking up the volume on your system can put inordinate amounts of stress on your vehicle’s electrical system. Most cars today cannot handle the high power demands of custom sound system components hence the need for a dependable and powerful capacitor. Enter the Rockville RFC30F Digital Hybrid Capacitor. This professional grade capacitor is built to handle even the most power hungry amplifiers delivering a surge of up to 20 volts of power when needed.
Rockville engineers have gone out of their way to design and put in your hands a high end capacitor at half the cost of our competitors similarly spec’d models. The RFC30F features a 3-digit super bright digital LED read out which displays the unit’s exact operating voltage to the decimal point. It comes equipped with heavy duty bolt down style platinum plated terminals which ensure a safe and solid connection. The built in IC Controlled circuitry alerts you if your voltage is too high (+17.5v) or too low (-10v). An automatic sleep feature helps the capacitor reserve power during lulls in volume levels, delivering it only as needed. With its sleek lines, modern styling and cool blue LED accents, the RFC30F will enhance the look of any sound system.
The reasonably priced RFC30F comes with a 90-day money back guarantee. With its high quality build and superb performance, its a definite step up and a must have for your car’s sound system.

  • Rockville RFC30F 30 Farad Capacitor Blue Voltage Display
  • ESR (Equivalent Series Resistance): 0.015 ohm @ 120Hz, 25°C
  • 30 Farad Digital Hybrid Capacitor with Blue Illumination
  • Blue illuminated window with light following played music
  • Black wire mesh cover
  • Warning tones for reverse polarity connection
  • 3-Digit, super bright LED voltage meter
  • Automatic sleep status when volume is low
  • Operating Voltage: 10 - 16V DC
  • Surge Voltage: 20V DC
  • Voltage measure accurate to +/- 0.1VDC
  • Capacitance tolerance: +/- 10%
  • Over-voltage protection circuit automatically alarms when the voltage above 17.5V or under 10V
  • Unit dimensions (Inches): 10.91” L x 6.38” W x 2.56” H

Videos Of RDA0+4K:


The Rockville RDA0+4K high current dual amplifier installation kit makes use of Nickel plated components to offer corrosion resistance with great signal transfer.

This kit guarantees that your amp will work way cooler and sound better as the cables are manufactured using the high quality copper raw materials and engineered with other specialized elements so that they transfer high current draws with low impedance.

Eliminating trapped air in the cables is one of the keys to making a great cable. Rockville uses a special manufacturing process to create the braided Super Flex cables. These cables remain extremely flexible, and have a reduced skin effect which helps them keep cool, and transfer power from battery to amplifier with minimal loses. What this means to you is a more efficient electrical system where your amplifiers wont be starving for power or current. You can expect longer service life from your amplifier, and increased audio performance.

The 0+4 gauge amp dual kit will handle the biggest and most powerful amps on the market! Rockville included only premium accessories which mean more efficient electrical system. Your amplifiers won’t be starving for power or current as you will enjoy longer service life from your amplifier, and increased audio performance. The kit features 100% copper RCA interconnect cables to ensure a smooth signal from the amplifier to your head unit.


  • Rockville RDA0+4K Dual Amp Kit
  • One set of 17’ Translucent Blue Twisted Pair, Double-Shielded 100% OFC Audiophile RCA cables
  • 17’ 0 Gauge High Current - Low Impedance, Translucent Red Soft Power Cable
  • Woven Nylon Mesh on 0 (zero) Gauge Shielded Power Cable
  • 3’ 0 Gauge High Current - Low Impedance, Translucent Silver Soft Ground Cable
  • 6’ 4 Gauge High Current - Low Impedance, Translucent Red Soft Power Cable 
  • 6’ 4 Gauge High Current - Low Impedance, Translucent Silver Soft Ground Cable
  • 15’ 12 Gauge Translucent Blue/Silver Heavy-Duty Soft Speaker Wire
  • 16’ 18 Gauge Violet Remote Turn-On Wire
  • (2) pcs 200A ANL fuse
  • Nickel Plated Battery Terminal
  • Nickel Plated Distribution Block, 1 Way Input and 4 Way Output
  • Nickel Plated Fused Block, 1 Way Input and 2 Way Output
  • 10pc Black Cable Ties
  • 4pc Ring Terminals
  • 4pc Spade Terminals
  • 10pc White Screws
  • 1pc Snap-In Firewall Grommet
  • 2pc Butt Connectors


  • Nickel Plated For Corrosion Resistance
  • High Current Competition Class Dual Amp Kit
  • 3000 Watt System Capable
  • Designed To Enable Peak Performance
  • 100% Copper RCA Interconnect
Shipping & Returns

Row content