The Alesis V Series MKII are USB-MIDI keyboards and production controllers with 25/49/61 keys. All three models are versatile USB MIDI controllers and come with everything you need to turn your musical ideas into reality from A to Z: responsive keys, velocity sensitive backlit pads, assignable knobs, octave and transpose buttons for access to the entire piano range, pitch bend and modulation wheels for additional expression and an arpeggiator with 6 modes for unique melodies and inspiring creativity. There is also an input for a sustain pedal for really expressive operation.