 A "patch" on the Quadrasynth can contain 1, 2, 3 or 4 of these tones.However, polyphony decreases as more tones are used.For example, a 1-tone patch would have 64-note polyphony, a 2-tone patch would have 32-note polyphony, and a 4-tone patch would only have 16-note polyphony.