Yamaha MJC8

MIDI junction controller

Yamaha MJC8 midi 8 patch bay
Buy one (16 on sale)

1986 (May)
Initially sold for ¥38,000

As music studios with MIDI links became more and more complex, a long chain of IN and THRU connectors became unusable.

The Yamaha MJC8 MIDI Junction Controller has been designed specifically to facilitate MIDI signal patching and re-routing even with highly sophisticated MIDI setups.

The MJC8 features eight MIDI IN and eight MIDI THRU terminals on the rear panel. Each MIDI IN terminal is independently assignable to any THRU terminal for exceptionally broad patching flexibility.

50 different patch configurations of this type may be stored in the MJC8's internal memory for instant recall whenever needed.

The lack of processing abilities and remote control put it quickly behind competing routers.


  • The MJC8 can handle up to 8 MIDI compatible instruments as masters, and 8 MIDI compatible devices as slaves.
  • As many as 50 different "Connection Settings" can be programmed and permanently stored in memory. No manual repatching is necessary. Simply assign MIDI IN terminal numbers of your choice to the desired MIDI THRU (Output terminals).
  • Connection Settings are obtained instantly by simply selecting a preset patch number.
Yamaha MJC8 brochure cover
Yamaha MJC8 brochure cover
Cover of After Touch June 1986
Cover of After Touch June 1986


Memory capacity

50 programs

Connection terminals and interfaces

MIDI IN (x8), MIDI THRU (x8)

Dimensions and weight

480w x 45h x 274d (mm)
3.25Kg / 7lbs. 17oz.


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