Roland MPU-104 & MPU-105 • MIDI Input & Output Selectors • 1980s made in Japan

Rack shelf combo containing Roland MPU-104 & 105 MIDI distribution units with original Boss PSA-120 power supplies. Both units are tested and working well, they are in good shape for their age.

MPU-104 Specs:

Function: MIDI Input Selector - Selects one of five MIDI inputs to a single MIDI output

Ports:

5 x MIDI In

1 x MIDI Thru

Controls:

Input Select buttons (1-5)

MPU-105 Specs:

Function: MIDI Output Selector - Distributes a single MIDI input signal to up to five MIDI outputs

Ports:

1 x MIDI In

5 x MIDI Thru

Controls:

Output Select buttons (1-5)

Both units do not require power for basic function, but a 9V power supply is needed for the LED indicators to operate.