Akai Professional MPK 25 review: specs and price

The device has an electronic display to present information to the user.

Buttons will light up when pressed, resulting in better visibility to users.

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The octave buttons are used to shift the keyboard up or down in one octave increments. This extends the range of the keyboard in either direction, which lets you play notes that lie outside the number of keys available.

The arpeggiator is the main tool used by computer musicians to generate looped material. An arpeggiator is simply a generator of signals that controls the tempo, pitch, velocity, gate, and other parameters of the sound.

The more buttons the device has, the more complex the input can be.

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The button is used to select independent banks of continuous controllers. Effectively, this allows you to control more independent parameters with the knobs, faders and buttons. The bank selector button is used to switch among the available banks.

A feature on some MIDI devices that allows to adjust tempo in real time based on an external input or by “tapping” a button on the device itself. It is used to allow musicians the flexibility of playing at any desired tempo based on their musical input.

Navigation buttons allows users to navigate through their files/data.

Similar to a weighted action keys, but with less resistance and a slightly springier release, semi-weighted keys are popular with many players. If you don’t need realistic piano response, but also don’t care for spring-loaded synth actions, a semi-weighted keyboard might be ideal for you.

The amount of keys the controller has on the keyboard.

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The keyboard also respond to the amount of force applied after initial impact. On electronic keyboards and synthesizers, this pressure sensitivity is usually called aftertouch.

The pads section is ideal to trigger loops and samples, using your finger drum skills.

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When pads respond to the amount of force applied after initial impact they are pressure-sensitive. The pads can be used to drum rhythmic elements of a song or to trigger samples, but can also be used to play notes.

The MIDI-Out port is used for transmitting data.

When pressed, the sustain pedal allows all notes to sound and “vibrate” freely. All notes played will continue to sound until the pedal is released. This is perfect when you need a sturdy and responsive control over sustain.

MIDI-In Port allows data to be received by a MIDI-compliant device. The “in” port enables the MIDI keyboard to be controlled by an external device or sequencer.

Dedicated expression pedals let you have a hands-free control over your keyboard's volume, vibrato, and more.

It is compatible with PCs and laptops running the Windows operating system.

Users can map, set and regulate the entire midi controller giving different functionalities to all different buttons, knobs and faders. The device could be also set up with different softwares.

It is compatible with Mac OS X devices such as MacBooks and iMacs.

Devices can communicate in both directions with each other without any additional MIDI interface. The biggest advantage is that the USB connection can be used for everything; power supply, MIDI-in and MIDI-out. This means you need less cables.