The Massive Audio “RAILCAP BLX” (RCLX) was designed for all Nano Blu and Trident Series High Performance Amplifiers. With Massive Audio's "Direct Plug & Perform" technology this powerful 4 Farad Capacitor with back lit Massive logo simply plugs directly into a dedicated docking port found on the end cap of the Blade Series amplifier. The RAILCAP is then automatically connected directly to the amplifiers internal power supply. When needed on demand (within milliseconds) the RCLX will charge & discharge lighting fast power that will help stabilize the amplifiers power supply improve overall performance.