The Free The Tone MB-5 is a MIDI THRU Box designed to receive one stream of MIDI data and split it into five outputs. This allows for parallel data transmission to multiple MIDI-receiving devices, which helps to avoid data delays or malfunctions that can occur when devices are connected in a serial chain. The unit also features an internal logic circuit that reshapes the incoming MIDI signal's waveform, preventing transmission errors due to a deteriorated signal.