Akai EWI4000S analog modelling synth - preset sounds with 2 VCO + 2 VCF, dual voice analog modelling, basic direct editing capability (PC and Mac editing software included for extensive sound editing). FX: chorus, delay, reverb. 2-digit 7-segment LED program display (shows program number when the program change sensor is pressed), hold key for playing a second note while sustaining the first. Connections: 1/4 jack (unbalanced), headphone output (stereo mini-jack), MIDI in & out, AC adaptor input, cable retention. Power: battery power using AA batteries or optional AC adaptor. optional Case from Protec (not included) #169700