The BK492 a 49 piano-style velocity-sensitive keys. The BK492 provides extensive controllers for virtual instruments, Dews, hardware synthesizers, samplers and any other MIDI compatible device. The eight fully assignable knobs and sliders allow for instant control of your software's features and can pick up just where you left off. The versatile and easy-to-use BK492 is a great controller in the studio and concert.