Free The Tone MB-5 MIDI THRU BOXMIDI is common to many guitar bass devices these days. Here at FREE THE TONE, we adopt MIDI devices in most of our custom pedalboards and rack systems. There is usually no problem if you have only one MIDI receiving device in your system. However if your system has multiple MIDI devices and if all of the MIDI signal wirings are done serially, MIDI data transmission requires a certain amount of time which can result in a delay or a malfunction. The MB