Large Capacity 5 Farad 18V Surge Volt for High Power Systems. ^^ Low ESR (Equivalent Series Resistance). Increase the peak power of amplifier. ^^ Built-in solid brass distribution block with satin chrome finish, which has (3) 1/0 AWG/4 AWG power inputs and (3) 1/0 AWG/4 AWG ground inputs for two amplifiers. ^^ Improves bass response and sound quality (cleaner mids and highs). Digital blue LED voltage display. ^^ Increase the peak power of amplifier. Helps reduce dimming lights. ^^ Includes mounting hardware for a secure installation.