Yes, you can connect an Akai MPK MIDI controller to a pair of headphones, but it’s important to understand that the Akai MPK is a MIDI controller and does not have built-in audio output capabilities. The MPK is designed to send MIDI data to a computer or other MIDI-compatible device, such as a synthesizer or virtual instrument software.
To hear the sound produced by the Akai MPK through headphones, you will need to connect the MPK to a device that can generate sound, such as a computer running music production software (DAW) or a hardware synthesizer. Here are the general steps to set up this connection:
Connect the Akai MPK to your computer or MIDI-compatible device using a USB cable or MIDI cables, depending on the MPK model and your device’s MIDI ports.
Install any necessary drivers or software for the Akai MPK on your computer, if required.
Open your music production software (DAW) on your computer or configure your MIDI-compatible hardware synthesizer to receive MIDI input from the Akai MPK.
Create or load a virtual instrument or synthesizer plugin within your DAW, or set up your hardware synthesizer to produce sound.
Make sure your headphones are connected to the audio output of your computer or audio interface, or to the headphone jack on your hardware synthesizer, if it has one.
Play the Akai MPK, and you should hear the sound of the virtual instrument or synthesizer through your headphones.
In summary, the Akai MPK itself does not have a headphone output. It relies on another device (such as a computer or synthesizer) to produce sound, which you can then listen to through your headphones by connecting them to the appropriate audio output of that device.

