The MIDI Solutions T8 is an 1-in 8-out MIDI Thru Box. All MIDI messages appearing at the input are sent to all 8 Thru outputs. Active circuitry cleans up any skewing of MIDI data bits that have occurred at the input, ensuring reliable operation in setups that require daisy-chaining or long cable runs. MIDI-powered, it requires no batteries or power supply to operate. A MIDI indicator LED lights up when the thru box is powered and flashes when MIDI data passes through it.