Since 1999, Massive Audio has been an industry leader in high-performance car audio, marine audio, and powersports audio equipment. Based in Commerce, California, they manufacture subwoofers, amplifiers, speakers, and signal processors for enthusiasts who refuse to compromise on quality. With over two decades of engineering and manufacturing experience, Massive Audio delivers products that combine performance with true value.
Massive Audio Rail CAP E – 4 Farad Amplifier Capacitor Power your sound system with precision and stability using the Massive Audio RAIL CAP, a high-performance 4 Farad amplifier capacitor engineered exclusively for Massive Audio EDGE Series amplifiers. Featuring Direct Plug & Perform technology, the Rail CAP E connects effortlessly to your amplifier via a dedicated Molex docking port—no extra wiring or setup required. Once connected, it integrates seamlessly with the amplifier’s internal power supply, creating a direct and ultra-efficient energy link. When your music demands instant bursts of power—like deep bass hits or high-volume peaks—the Rail CAP E responds in milliseconds, delivering rapid charge and discharge cycles to keep voltage levels stable and consistent. This results in improved amplifier performance, reduced distortion, and enhanced overall sound clarity. A stylish backlit Massive Audio logo adds a professional touch to your installation, signaling both performance and design excellence. Key Features: 4 Farad high-capacity energy storage Direct plug-in connection via Molex port – no wiring needed Lightning-fast power delivery for dynamic audio response Stabilizes voltage and improves amplifier efficiency Designed exclusively for Massive Audio EDGE amplifiers Illuminated Massive Audio logo for a clean, professional look *All RAILCAPS work with all amps that have a 4 Pin Molex Input These Massive Amplifier Models have the RAILCAP Molex input TRIDENT T2 T3 T4 TX2 TX44 TX48 PRIMO P3 P4 PX4 PX4S PX48 PX6 NANO EDGE E2 E3 E3N E4 EX2 EX44 EX44N Dimensions ~ 3" x 6" x 2" 4 Pin Molex Connectors LED Logo Manuals & Downloads RAILCAP Manual