The Minirig Sub is a remarkable breakthrough in speaker technology. Using a patented long-throw 3" subwoofer driver, air flow optimised folded port and powerful 30W amplifier; you can now hear those deep bass notes like never before. All this in a stylish compact enclosure with inbuilt rechargeable battery, it truly is a world first. - See more at the Minirigs website. The Minirig Subwoofer works exactly like the Minirig portable speaker - using a standard 3.5mm input. It also passes the audio through and out to the other socket. So you can use this product to add bass to your Minirig or ANY other speaker system. THE PACKAGE INCLUDES: Minirig Subwoofer, Audio cable, USB charging cable, padded nylon case to protect your sub and instruction manual. DON'T FORGET to purchase one of our custom 4-pole splitter cables which allows you to set up an amazing 2.1 Minirig sound system and turn the Minirigs on and off from the subwoofer!