Akai MPK 225 User's Guide download pdf (Page 31)

22. Program Change: Press this button to enter Program Change Mode where you can send

a Program Change or Program With Bank Change message to a hardware or software

module.

23. Preview: Press and hold this button, and then press or move another control on the

keyboard to see the value that control will send without actually sending the value. This

helps you avoid sending erroneous controller messages due to the physical position of

the controller. (This is useful when switching between control banks where, for example,

the physical position of a knob may not correspond to the last value sent by the

controller.)

24. Loop: Press and hold this button to activate the Loop or Repeat feature in your software.

This button is considered a transport control, so it can be set to send the same

messages as the other transport control buttons: MMC (MIDI Machine Control),

MMC/MIDI SysEx, MIDI Start/Stop, or pre-assigned MIDI CC values.

Important: Your software must be able to loop or repeat in order to use this feature.

Also, make sure that you are using the MPK225 Preset named after your particular

software. If your software does not have a corresponding MPK225 Preset, configure the

Loop button in Edit Mode so it communicates properly with your software.

25. Transport Control Buttons: These five buttons are dedicated buttons for sending

conventional transport control commands: Rewind, Fast-Forward, Stop, Play, and

Record. These can be set to send MMC (MIDI Machine Control), MMC/MIDI SysEx, MIDI

Start/Stop, or pre-assigned MIDI CC values.

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Akai MPK 225 User's Guide Page 31