88 note, semi-weighted action keyboard with adjustable touch sensitivity. The Ka S1 provides 128 notes of polyphony for effortless performances. The Ka S1 is fueled by KORE 1.0 128 MB Sound Library which includes optimized German D piano samples from pro-line of products as well as featuring electric piano, organ, harpsichord, clavs, strings, guitar and bass. Create musical split, layer or duo performance combinations with adjustable split point. Choose from 11 metronome time-signatures to practice and play along with. A single USB cable allows you to use the Ka S1 as both a MIDI controller and audio sound source with your Mac/PC based DAW. Record your own keyboard performances with the intuitive single track song recorder. The Ka S1 offers an integrated 4-speaker, stereo sound system powered by dual 15 W digital amplifiers.