Yamaha MEP4
MIDI event processor

Yamaha MCS2


In 1986 the reviews named it the most flexible and powerful MIDI signal processor currently available. The MEP4 allows to modify any MIDI signal in virtually every way. Data can be separated on different MIDI channels and sent to independent MIDI OUT terminals, for example. A MIDI message can be changed to a different message: for example changing a pitch bend value into a modulation message. Notes can be transposed on a specified MIDI channel up or down by any amount. The MEP4 is even capable of delaying MIDI signals to create a variety of echo effects. Delay and transposition can be combined to create automatic arpeggios.

Anything of these commans can be done through a modern DAW, that's true, but having a box with a well defined set of modifications available still sounds like a very interesting option for creativity purposes.

Technical specs

Memory capacity

60 programs

Connection terminals and interfaces

Foot Switch

Dimensions and weight

480w x 45.2h x 282d (mm)
3.3Kg / 7lbs. 3oz.

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