The Yamaha MEP4 is a MIDI Event Processor that gives users complete control over MIDI signals. It allows users to change, ignore, filter, and delay various types of MIDI messages. The device features four independent processors, each capable of accepting different types of MIDI messages, modifying their status or data bytes, delaying them for up to three seconds, and sending the output to any of four output ports.
The device can change, ignore, filter, and delay any type or types of MIDI signals.
The unit can delay a message for up to 3 seconds.
The device has 4 independent processors.