Housed in BOSS' popular single-pedal chassis, the RC-3's new features include true stereo ins/outs and up to three hours of onboard stereo recording and loop storage. 99 onboard memory slots are available for storing your creations. The RC-30 also boasts a USB 2.0 port for swapping and managing WAV loops with your computer. An aux in jack for portable devices and a key selection of onboard rhythms including real audio drum loops come standard. Connect an optional BOSS FS-5U Foot Switch for additional foot control if desired!.