Yamaha YC-20

Controls:
Knobs: Pitch, Volume and Bass VolumeLevers:
    Vibrato: Touch Vibrato, Vibrato and Vibrato speed  
    Bass: 16', 8' and Man. Bass.  
    Section I: 16', 8', 4', 2-2/3', 2', 1-3/5', 1'
    Balance
    Section II: Bright, 16', 8', 4', 2'
    Percussive

Info