The Fingersonic Keys uses two knobs to control sound, volume, effects, and performance functions. Here is the simplest explanation of what each knob does.
Left Knob (Expression Controls)
Octave Adjustment
Rotate the knob to change the octave.
Clockwise = higher
Counterclockwise = lower
Range: –2 to +3 octaves
Transposition
Press the knob once to enter Transposition Mode.
Rotate to shift pitch by semitones.
Clockwise = up
Counterclockwise = down
Range: –6 to +6 semitones
Press again to exit.
Reverb
Press and hold the knob, then rotate to set reverb level.
Clockwise = more reverb
Counterclockwise = less reverb
Pitch Bend
Hold a key and rotate the knob to bend the pitch in real time.
Right Knob (Sound and Volume Controls)
Sound Switching
Rotate the knob to change sound presets.
Clockwise = next sound
Counterclockwise = previous sound
Volume Adjustment
Press the knob once to enter Volume Mode.
Rotate to adjust volume.
Clockwise = louder
Counterclockwise = quieter
Press again to return to sound switching.
MIDI Keyboard Mode
Press and hold the right knob for 3 seconds.
The speaker turns off, but USB MIDI and Bluetooth MIDI remain active.