The HYDRA is a midi foot controller. Featuring 8 buttons for easy use, the HYDRA is the new standard for MIDI controllers, all while retaining the smallest possible footprint for fly date and tight pedalboard applications. Multiple power supply mating, DC/AC inlet or outside pins on 7 pin MIDI out connector. Program Change 0-7, external midi channel select 1-16 (Arrow pointing down is channel 1, each clockwise selection increments the channel up to 16). High bright blue LEDs for stage use. Proudly made in North America.