Features： 1、4.0 Farad power capacitor, very suitable for systems up to 2000W, and has good performence, can work effectively. 2、With warning indicator, including transparent mounting bracket, automatic shutdown protection, 10‑16 volts DC, any size wire with ring terminal is acceptable. 3、The condenser installation is under the case of subwoofer amplifier, to compensate for the lack of power supply of the bass amplifier. 4、Audio capacitors provide instant power on demand to power your power amps and stabilize voltage to keep your system running at peak performance. 5、The integrated digital display informs you of system status and performance, bring you more convenience. Specification： Condition: 100% Brand New Item Type: 4 Farad Power Capacitor Material: Aluminium Alloy Color: As the Picture Shown Description: Today’s car audio amplifiers need huge amounts of current. Often a vehicle’s electrical system is unable to provide it. With your car’s air conditioning running, the factory electrical charging system may already be operating at only 70% of full capacity. When a bass note hits or when playing your system very loudly, there may not be enough electrical energy to power your amplification system properly causing your music to sound strained and distorted. Capacitors are designed to store enough electrical current and to release this energy extremely fast due to their superior design and low internal resistance. In addition, as quick as your amplifier needs a new current surge, your capacitor will provide it. This continuous cycle of power discharge and recharge guarantees flawless bass playback. Package List： 1 x 4 Farad Power Capacitor  1 x Bag of Screw