Best capacitor for car audio { July 2023 }

When it comes to maintaining a consistently smooth music listening experience while safeguarding your car’s amplifier and battery from undue strain, audio capacitors play a crucial role. As an audiophile, giving attention to this essential car component is paramount.

Being thorough in my approach, I acquired and tested ten top-rated audio capacitor models to make well-informed product recommendations.

After careful evaluation, I have identified and reviewed the 8 Best capacitor for car audio, ensuring that fellow enthusiasts can enhance their audio setups with confidence and optimal performance.

Best capacitor for car audio {Quick overview}

Here is the list of top best car audio capacitor in 2023.

1: BOSS Audio Systems CAP8 – Best overall

2: Pyle PLCAPE50 – High performance

3: Sound Storm Laboratories C352 – Reliable and efficient

4: Planet Audio PC20F – Powerful and durable

5: Rockville RFC50F – Premium quality

6: Audiopipe ACAP6000 – Excellent performance

7: Planet Audio AC1800.5 – Versatile and robust

8: Kenwood X802-5 eXcelon – Cutting-edge technology and versatility

Best car audio capacitor { In-depth analysis }

After extensive research and dedicating a substantial amount of time, we have compiled comprehensive descriptions of the top-rated capacitors for car audio as of July 2023.

1: BOSS Audio Systems CAP8 – Best overall

BOSS Audio Systems CAP8

The cutting-edge BOSS Audio Systems CAP8 audio capacitor, designed to revolutionize your audio experience. With an impressive 8 farad capacitance and operating at 24 VDC, this capacitor delivers a remarkable power boost, ensuring crystal-clear and dynamic sound performance.

A standout feature of the CAP8 is its audible warnings, alerting you to potential issues or fluctuations in your system. This added safety measure guarantees uninterrupted music enjoyment without equipment damage.

Equipped with a digital display, the CAP8 provides real-time operational and performance information. Easily monitor its status and optimize functionality effortlessly.

The game-changing automatic sleep mode intelligently detects inactivity and conserves power, extending the capacitor’s lifespan and promoting energy efficiency.

Recognized as a favorite among audio enthusiasts, the CAP8 is ideal for loud systems, effortlessly handling high power demands without compromising sound quality.

BOSS Audio Systems backs the CAP8’s quality with a generous 1-year warranty, ensuring peace of mind in the unlikely event of defects or malfunctions.

Note that the CAP8 may not be suitable for basic systems without requiring additional power and advanced features. It excels in meeting the demands of those seeking exceptional audio performance.

Reason to Buy
  • High capacitance power
  • Audible warning system
  • Real-time digital display
  • Automatic sleep mode
  • Ideal for loud systems
Reason to Avoid
  • may not be suitable for basic systems without requiring additional power

 2: Pyle PLCAPE50 – High performance


Best capacitor for car audio

The Pyle 5.0 Farad Digital Power Capacitor is a dependable and efficient device designed for car audio systems in the medium to high-end range. It can output 1-2 kW of power, ensuring top performance and improved audio quality. With a capacitance rating of 5 farads, it stores enough power to deliver smooth and consistent performance to your audio system.

This capacitor works with car electrical systems that operate within a voltage range of 12-24 VDC. Its design is cylindrical and compact, making it easy to install in tight spaces and providing flexibility during setup.

You can monitor the capacitor’s performance through its digital display, which shows the voltage. This feature helps you ensure that the capacitor operates within the desired voltage range.

To prioritize safety, the Pyle Digital Power Capacitor has a built-in circuit that protects against reverse polarity and over-voltage. This safeguards your car audio system from potential damage due to incorrect connections or voltage fluctuations.

The installation process is hassle-free, thanks to the included mounting hardware. As a Pyle product known for its commitment to quality, this capacitor is recommended for lower-powered systems. It offers an affordable and reliable solution for enhancing your car audio experience.

However, it’s important to handle the terminals of this capacitor with care as they are fragile. Avoid damaging them during installation or operation.

Reason to Buy
  • 12-24 VDC operation
  • 5 farad capacitance
  • Built-in protection circuit
  • Compact design
  • Reliable brand
Reason to Avoid
  • Fragile terminals

 3: Sound Storm Laboratories C352 – Reliable and efficient

Sound Storm Laboratories C352

The Sound Storm Laboratories C352 is a low-power capacitor designed to enhance your car audio system’s performance. With a capacitance rating of 5 farads and a voltage rating of 16 VDC, it provides reliable power supply and helps stabilize voltage fluctuations. The capacitor has a capacitance tolerance of 10%, ensuring consistent performance.

Equipped with a surge capacity rating of 24 volts, this capacitor can handle sudden power surges, protecting your audio system from potential damage. The terminal material is chrome plated, which not only enhances durability but also provides a sleek and stylish appearance.

The C352 comes with all the necessary mounting hardware, making installation a breeze. Its compact size allows for flexible placement options, ensuring it can fit in most vehicles without taking up too much space. Despite its compact design, the capacitor offers easy installation, saving you time and effort.

While the C352 excels in its core functions, it has limited upgrade potential. However, it compensates for this with a 1-year warranty, providing peace of mind and assurance of its quality. Overall, the Sound Storm Laboratories C352 is a reliable and efficient low-power capacitor that enhances your car audio system’s performance, while offering easy installation and a sleek design.

Reason to Buy
  • 16 VDC operation
  • 3.5 farad capacitance
  • About 10% capacitance tolerance
  • Compact and slim design
  • Easy installation
Reason to Avoid
  • Limited room for system upgrades

 4: Planet Audio PC20F – Powerful and durable

Planet Audio PC20F

The Planet Audio PC20F capacitor—an exceptional choice for audio enthusiasts seeking unparalleled performance. With a substantial capacitance of 20 farad, this capacitor ensures a stable and consistent power supply, resulting in enhanced sound quality and system efficiency.

Operating on a 24 VDC power supply, the PC20F delivers reliable and robust power to high-end audio equipment, allowing for a truly immersive and dynamic listening experience. The digital display provides clear and precise information, enabling easy monitoring of the capacitor’s status and performance.

An impressive feature of the PC20F is its integrated audible warnings. These alerts serve as valuable safeguards, notifying users of potential issues such as low voltage or excessive current draw. This proactive approach ensures the safety and longevity of the audio system, instilling confidence in the product’s reliability.

Planet Audio, known for their commitment to quality, backs the PC20F with a generous 1-year warranty. This warranty provides assurance and peace of mind, protecting your investment and demonstrating the brand’s confidence in their product.

While the PC20F’s 20 farad capacitance may be excessive for low-power systems, it is precisely this robust capacity that makes it a popular choice for high-end setups. Designed to handle demanding power requirements, the PC20F offers unrivaled performance for audiophiles who demand the utmost in audio quality.

Reason to Buy
  • 24 VDC operation
  • 20 farad capacitance
  • Audible warning system
  • Digital display
  • Popular choice for high-end systems
Reason to Avoid
  • Overkill for low-power setups

 5: Rockville RFC50F – Premium quality

Rockville RFC50F - best capacitor for car audio

The Rockville RFC50F is an impressive capacitor designed to store a significant amount of electrical energy. With its capacitance of 50 Farad, it has the capability to hold a substantial charge. This capacitor also stands out due to its low Equivalent Series Resistance (ESR) of 0.015 ohm, which facilitates efficient power transfer.

In terms of aesthetics, the RFC50F boasts a vibrant blue voltage display and illumination that adds a visually appealing touch to your audio system. The blinking light feature adds a dynamic element, capturing attention and enhancing the overall aesthetic appeal. Furthermore, the wire mesh cover in sleek black not only provides protection but also contributes to the capacitor’s modern and stylish design.

One notable safety feature of the RFC50F is its reverse polarity warning system. This feature plays a crucial role in preventing accidental damage to the capacitor and other connected components by alerting users to incorrect wiring.

Equipped with a 3-digit LED voltage meter, this capacitor allows you to easily monitor and gauge the voltage levels. The meter provides accurate readings with a precision of +/- 0.1VDC, ensuring that you stay well-informed about your system’s electrical performance.

The RFC50F capacitor operates within a voltage range of 10-16V DC, making it suitable for a variety of automotive and audio applications. It is designed to withstand surge voltages of up to 20V DC, ensuring protection against unexpected power fluctuations.

With a capacitance tolerance of +/- 10%, this capacitor delivers consistent and reliable performance. It also incorporates over-voltage protection, safeguarding against potential damage caused by excessive voltage levels. Moreover, the capacitor includes alarms for both high and low voltage, providing alerts for potentially harmful operating conditions.

In regards to its physical dimensions, the RFC50F capacitor boasts a length of 10.91 inches, a width of 6.38 inches, and a height of 2.56 inches. These compact measurements allow for effortless installation in different areas of your vehicle, granting you flexibility in its placement.

Furthermore, this capacitor offers an automatic sleep mode, specifically designed to preserve power consumption during periods of inactivity. This feature serves to conserve energy effectively when the capacitor is not actively utilized. By implementing this intelligent functionality, the capacitor guarantees efficient operation while conveniently saving power resources.

Reason to Buy
  • High capacitance of 50 Farad
  • Low Equivalent Series Resistance (ESR) for efficient power transfer
  • Vibrant blue voltage display and illumination for aesthetic appeal
  • Reverse polarity warning system for safety
  • Accurate 3-digit LED voltage meter for monitoring
Reason to Avoid
  • Capacitance tolerance of +/- 10% may be less precise for some users.

 6: Audiopipe ACAP6000 – Excellent performance

Audiopipe ACAP6000

The Audiopipe ACAP6000 is a highly capable car audio capacitor specifically designed to improve your vehicle’s audio system. Boasting an impressive 6 farad capacity, it effectively stabilizes the power supply, thereby reducing strain on your car’s electrical system.

With a digital display, it provides precise voltage readings, making it convenient for you. Monitoring your system’s performance becomes effortless with just a quick glance. The capacitor also has electronic protection to safeguard your audio equipment from voltage spikes or fluctuations, preventing potential damage.

Moreover, the ACAP6000 provides amplifier protection, preventing overloading and ensuring optimal performance. This not only helps maintain the longevity of your amplifier but also delivers clear and distortion-free sound.

To further enhance your overall driving experience, this capacitor incorporates vehicle dynamic control. This exceptional feature works to stabilize your car’s electrical system, reducing noise interference and enabling your audio system to perform at its peak.

With a remarkable maximum stability rating of 20, the ACAP6000 ensures consistent power delivery, even during demanding audio playback. It excels in providing outstanding stability, guaranteeing flawless performance during high-volume and bass-intensive moments.

Thanks to its low equivalent series resistance of 0.002 ohms or less, the ACAP6000 minimizes power loss, allowing your audio system to efficiently draw power. This results in improved sound quality and overall performance.

Another impressive attribute of this capacitor is its ability to control headlight flickering. It effectively eliminates the bothersome flickering of your car’s headlights that may occur when playing music at high volume levels. This ensures a steady and uninterrupted power supply to both your audio system and other electrical components.

It offers a cost-effective solution, providing a substantial 6 farads at a reasonable price point. This makes it an excellent choice for car enthusiasts who wish to enhance their audio system’s performance without exceeding their budget.

Reason to Buy
  • 6 farad capacity
  • Digital display for voltage readings
  • Electronic protection against voltage fluctuations
  • Amplifier protection for optimal performance
  • Vehicle dynamic control for noise reduction
Reason to Avoid
  • Although some users face problem in charging it.

 7: Planet Audio AC1800.5 – Versatile and robust

Planet Audio AC1800.5

The Planet Audio AC1800.5 is a beastly car amplifier, pumping out a whopping 1800 watts of power. It’s designed with 5 channels to handle multiple speakers and a subwoofer, giving you a wide range of audio frequencies to enjoy on the road. This amp’s A/B amplifier class ensures reliable and efficient performance.

No need to stress about impedance with the AC1800.5. It’s built to work with various speaker impedance levels, offering stability at both 2 and 4 ohms. Connect different speakers without worrying about impedance mismatches.

This amp handles a wide frequency range, reproducing both high and low frequencies accurately. It’s got a bridgeable trimode function, letting you combine channels to power a single subwoofer or use them independently for different speakers.

Adjust the amplifier’s sensitivity with the input sensitivity selector to match your source unit’s output. This ensures optimal audio signal transfer, especially when connecting to different head units or audio sources.

For deep bass lovers, the AC1800.5 has a variable bass boost control. Crank it up to +18dB and customize the bass levels to your liking, giving your audio system that extra punch.

Align the phase of your speakers or subwoofers with the switchable phase shift function. Adjust the phase from 0 to 180 degrees for improved sound quality and a more cohesive audio experience.

Thanks to its MOSFET technology, this amp delivers power efficiently and stays stable even during intense audio playback. MOSFET amps handle high power levels while remaining cool and dependable.

Conveniently control the subwoofer’s volume with the included remote subwoofer control. Fine-tune the bass output from your seat, tailoring the subwoofer’s performance to your preferences.

Reason to Buy
  • Powerful 1800 watts
  • Compatible with various speaker impedance
  • Wide frequency range
  • Adjustable input sensitivity
  • Variable bass boost control
Reason to Avoid
  • Requires adequate power supply

 8: Kenwood X802-5 eXcelon – Cutting-edge technology and versatility

Kenwood X802-5 - best capacitor for car audio

The Kenwood X802-5 eXcelon is a beast of a 5-channel amplifier, packing a whopping 1600 Watts of raw power for those who crave audio excellence. Immerse yourself in the astonishing world of High-Resolution Audio, as this amplifier ensures every nuance and detail of your music is brought to life.

No sonic aspect goes unnoticed with this amplifier’s exceptional ability to handle both ultra-high and low frequencies. Experience cleaner, crisper sound quality thanks to the noise-reducing output coil with magnetic shield.

Installing the Kenwood X802-5 eXcelon is a breeze. Its compact dimensions of 30.48 x 22.86 x 10.16 cm and sleek design effortlessly blend into your vehicle’s interior without hogging space. Enjoy added convenience and aesthetic appeal with the detachable sliding terminal cover.

The amplifier’s design exhibits a thoughtful arrangement of all terminals on a single side, providing a remarkable level of convenience when connecting speakers and other audio devices. Whether you possess professional installation expertise or harbor a fervent enthusiasm for DIY projects, you will discover the installation process to be remarkably hassle-free, resulting in immense satisfaction.

Thanks to its speaker level input harness, integrating the Kenwood X802-5 eXcelon into your existing audio system is a walk in the park. Seamlessly connect to your speakers and treat yourself to a powerful, immersive audio experience.

With a remarkably lightweight construction of just 2.1 kg, the Kenwood X802-5 eXcelon presents an excellent opportunity to travel unencumbered. You can now embark on your journeys while carrying your favorite music along, ensuring that you never miss a single beat.

Reason to Buy
  • Powerful 1600 Watts
  • Handles high and low frequencies
  • Compact and sleek design
  • Convenient terminal arrangement
  • Lightweight for portability
Reason to Avoid

    best capacitor for car audio – Buying Guide

    Types of capacitors

    Capacitors are electronic components used to store and release electrical energy. They come in various types, each designed for specific applications. Here are some common types of capacitors:

    Electrolytic capacitor

    An electrolytic capacitor contains two plates: positive and negative. They are immersed in an electrolyte solution to store electrical energy. The plates are kept apart by a thin insulating material called the dielectric.

    In electrolytic capacitors, the dielectric is usually a slim oxide layer formed on one plate’s surface. This oxide layer serves as the dielectric and enables the capacitor to store and release electrical energy.

    Electrolytic capacitors have high capacitance values and find frequent use in applications needing significant charge storage.

    Carbon audio capacitors

    Carbon audio capacitors utilize carbon as their primary component and are designed for high-frequency applications due to its excellent electrical conductivity. With low inductance and resistance, these capacitors ensure enhanced audio signal transmission.

    Their notable feature lies in delivering clear, detailed, and accurate sound reproduction. Commonly employed in audio equipment like amplifiers and speakers, they minimize signal distortion and elevate audio quality.

    These capacitors exhibit stability and efficiency across a broad frequency range while effectively handling high power levels. To summarize, carbon audio capacitors present a dependable and efficient solution for achieving superior audio reproduction in diverse audio systems.

    hybrid audio capacitor

    A hybrid audio capacitor combines different types of capacitors in order to optimize performance in audio applications. It typically combines a film capacitor and an electrolytic capacitor.

    The film capacitor provides excellent frequency response and low distortion, while the electrolytic capacitor offers high capacitance for energy storage.

    This combination allows the hybrid capacitor to deliver both high-quality sound reproduction and sufficient energy storage capabilities.

    Hybrid audio capacitors are often used in audio equipment and speaker crossovers to achieve a balance between performance and size/cost constraints.

    Available Terminals

    The availability of suitable terminals is important when buying a car capacitor as it ensures compatibility with the car’s electrical system, facilitates easy installation, promotes reliable connections, and enhances maintenance and serviceability.

    Matching terminals ensure a seamless integration into the existing wiring, eliminating the need for complex modifications or adapters. Reliable connections prevent voltage drops or failures, ensuring proper functioning.

    Additionally, accessible terminals make installation and future maintenance tasks more convenient, contributing to a hassle-free experience with the car capacitor.

    Value rate

    The importance of value rate in a car audio capacitor cannot be overstated. The value rate refers to the ability of the capacitor to store and discharge electrical energy effectively. When buying a car audio capacitor, it is crucial to consider its value rate as it directly impacts the performance of your audio system.

    A capacitor with a high value rate will provide stable power supply, reducing strain on your car’s electrical system and preventing voltage drops that can lead to audio distortion or equipment damage.

    Additionally, a capacitor with a higher value rate can quickly charge and discharge energy, ensuring smooth and consistent power delivery to your audio components.Therefore, selecting a car audio capacitor with a suitable value rate is essential for achieving optimal audio performance and protecting your investment.

    Surge value

    When buying a car audio capacitor, surge value matters a lot. It shows how well the capacitor can handle sudden power surges or spikes in current demand. A higher surge value means the capacitor can deliver powerful bursts without voltage drops or performance problems.

    So, pick a capacitor with a surge value that matches or surpasses your audio system’s power needs, especially if you have powerful amplifiers and subwoofers. This guarantees stable voltage, avoids distortion, and safeguards your audio gear from harm caused by inadequate power.

    Size of the capacitor

    The size of the capacitor directly affects its storage capacity and power output. A larger capacitor can store more electrical energy, which helps in delivering a burst of power when needed. It ensures a stable voltage supply to your car audio system, preventing voltage drops and maintaining consistent performance.

    Furthermore, a larger capacitor typically has lower internal resistance, allowing it to discharge quickly and efficiently. However, it’s crucial to consider available space in your vehicle for installation, as larger capacitors require more room. Therefore, striking the right balance between size and available space is vital for optimal performance.

    Quality of car audio capacitor

    An efficient power delivery is guaranteed with a high-quality capacitor, minimizing voltage drops and maintaining a stable electrical current. This preserves the sound quality by preventing distortion and ensuring clarity even at high volumes.

    It’s important for the capacitor to be durable, capable of withstanding vibrations, temperature fluctuations, and constant usage without affecting its functionality.

    Additionally, a reputable brand provides reliable warranties, customer support, and peace of mind. By investing in a quality car audio capacitor, you can expect optimal performance, a longer lifespan, and an immersive audio experience while driving.

    best car audio capacitor – FAQs

    How to calculate the necessary value rate for a car audio capacitor?

    Calculating the required value rate for a car audio capacitor involves considering several factors. First, determine the amplifier’s power consumption and impedance.

    Next, calculate the total power consumption of the audio system, including speakers. Then, estimate the electrical demands during peak power output.

    Consider the type of music you listen to and the desired sound quality, as different genres have varying power requirements. Additionally, factor in the battery’s current capacity and the alternator’s output.

    Lastly, consult a car audio professional or refer to the manufacturer’s recommendations to ensure the chosen capacitor meets the required value rate for optimal performance and stability.

    Do all capacitors have a built-in resistor?

    Not all capacitors have a built-in resistor. Capacitors store and release electrical energy, with two conductive plates separated by a dielectric. Their main function is charge storage and release, lacking an inherent resistor.

    Yet, certain capacitors may have internal resistance due to their construction or design, impacting circuit behavior. Factors like materials or physical properties can cause these resistances. However, it’s vital to acknowledge that resistor presence isn’t universally true for all capacitors.

    Are all capacitors compatible with all amplifiers?

    Capacitors and amplifiers don’t always go together. Compatibility relies on capacitor type, rating, and the amplifier’s specifications. Amplifiers have input and output impedance requirements, so capacitors must match. Electrolytic, ceramic, and film capacitors each have distinct traits that impact suitability.

    Capacitance, voltage rating, and frequency response are also crucial factors. To guarantee compatibility and top performance, consult the amplifier’s documentation and consider its specific needs and recommendations before picking a capacitor.


    Choosing the best capacitor for your car audio system is very important if you want to enhance it. We’ve done extensive research and analysis to pinpoint the ultimate capacitor for car audio.

    Its remarkable performance, reliability, and capacity make it the preferred option for car enthusiasts who want to distribute power efficiently and minimize strain on their electrical system. Don’t miss out on unleashing the complete potential of your car audio experience.

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