A.The TD-20 provides built-in support for only one three-way triggering V-Cymbal, so this is not possible using just the TD-20.
However, if you want to add another three-way triggering V-Cymbal, you can do so by using a TMC-6 Trigger MIDI Converter. The TMC-6 allows you to connect up to three three-way triggering V-Cymbals and use them to trigger TD-20 sounds via MIDI.
(2005/07/21)