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Xpansion1 adds midi connectivity to your EXP1

This XP1 module will give you the standard midi connectivity with 2×3.5mm jacks. You will be able to connect directly to sound modules or MIDI devices.

USB to midi conversion
With this module, the EXP-1 can act as a an USB <-> midi converter. You can use it for example to connect a midi keyboard to a laptop which has only USB port.

The channel 4 is used for this conversion. All the MIDI traffic of the channel 4 entering on USB will be forwarded to XPANSION MIDI on channel 4 and the same on the other sense. Note that only Note ON, Note OFF will be forwarded.