Rear panel – Akai MPK225 User Manual

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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.

Rear Panel

Power Input: If you do not want to use
a computer in your setup (i.e., if you are
using MPK225 to control an external
MIDI module), connect MPK225's
power input to a power outlet using an
optional power adapter (6V DC, 1A,
center-positive, sold separately).
Alternatively, you can connect MPK225's USB Port to a power outlet using a standard
USB charger (sold separately).

Power Adapter Restraint: You can secure a power adapter cord to this restraint to help
avoid disconnecting it accidentally.

Power Switch: Press this button to power the MPK225 on or off.

Kensington Lock: You may use this Kensington lock slot to secure the MPK225 to a
table or other surface.

USB Port: Use a standard USB cable to connect this USB port to your computer. The
computer's USB port provides ample power to MPK225. You can also power MPK225 by
connecting this USB port to a power outlet using a standard USB charger (sold
separately). This connection is also used to send and receive MIDI data to and from your
computer.

This connection is also relevant to MPK225's MIDI Out and MIDI In:

• If an external device is connected to the MIDI Out, your computer can send MIDI

messages out along this path: Computer

 MPK225  External Device.

• If an external device is connected to the MIDI In, the external device sends MIDI

messages in along this path: External Device

 MPK225  Computer. MIDI

messages can then be sent to an external device via the MIDI Out, but it must pass
through the computer first.

MIDI Out: Use a standard five-pin MIDI cable to connect this MIDI Out to the MIDI In of
an external MIDI device (e.g., a synthesizer, sequencer, drum machine, etc.).

MIDI In: Use a standard five-pin MIDI cable to connect this MIDI In to the MIDI Out of an
external MIDI device (e.g., another MIDI controller). The MIDI messages sent to this MIDI
In will be sent to your computer via the USB port.

Expression Pedal Input: Connect an optional 1/4" TRS expression pedal to this input.

Sustain Pedal Input: Connect an optional 1/4" TS sustain pedal or footswitch to this
input. (You can configure the connected pedal to control the keyboard's sustain, to send
a MIDI CC message, or other messages.)

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