A Practical MIDI Thru Box Easily control up to four MIDI devices or synths with the intuitive ST-4 Switchable MIDI Thru Box from Crumar. This simple box can transform a solo electronic artist into a full ensemble for live performances and studio-jam sessions. The MIDI Thru Box makes it easy to avoid hung notes and incomplete events; it takes into account notes played even when the buttons are turned off. How do you operate it? Just push the corresponding button and play! Synthesists and artists at Sweetwater love this simple, effective way to take their MIDI connections to the next level.Crumar ST-4 Switchable MIDI Thru Box Features: 1 MIDI-in port, 4 MIDI-out ports to maximize your MIDI jam sessions Connect to any MIDI compatible device Also works as a USB-MIDI interface No more MIDI routing issues No pesky hung notes or incomplete MIDI events mean smooth performances every time out1-in/4-out MIDI Thru Box