Add 128 GM voices to any non-ensemble digital piano in the Suzuki line by connecting the EX-100 Sound Expander. The sound module features 2MB of sound ROM, built-in reverb, 16-part multitimbrality, and 32-note polyphony, all in a compact lightweight package. The Suzuki EX-100 GM module includes AC adapter plus MIDI and audio cables.128 general MIDI voices 2MB ROM Reverb 16-part multitimbral 32 note polyphony AC adapter, audio, and MIDI connecting cables included