2.2 Modulation Wheel
It is very common to use the modulation wheel to change the
intensity of effects:Mainly vibrato (pitch change), tremolo (change
the volume), and modulation (change the tone).The modulation
wheel produces a vibrato effect shortly after the sound is generated.
It is most effective for voice such as saxophone strings and Oboe.
2.3 Volume Slider
Adjusts the overall volume of the unit.
2.3 Octave
The “Octave UP & DOWN” buttons can be used to enlarge the
32-key to 88-key or more. With it, you can play the note from –C1 to
C9(128 notes). Some players want to play start with C2 not C3, He
can change the Octave value to -1 easily.
2.4 Transpose
You can transpose the KEYBOARD, shifting it up or down in
semitone intervals.