Check the listing for details. Akai Professional LPK25 MK2 25-Key USB-MIDI Keyboard Controller. Condition: New. Listed at 59.00 USD. The Akai Professional LPK25 MK2 is a 25-key USB-MIDI keyboard controller designed for musicians and producers of music. Known for their high-quality products in the realm of pro audio equipment, Akai Professional ensures that the LPK25 MK2 delivers on the promise of MIDI control and functionality. With its sleek design and reliable performance, this keyboard controller is a versatile tool for creating and manipulating music in a variety of software programs. The Akai Professional LPK25 MK2 is a top choice for those looking to enhance their music production capabilities.