P49: OptComTrem A tremolo effect with a natural, gentle wave - like the ones produced by optical chips used in vintage Fender amps. A sound with a natural, soft sway. The TONE has been assigned to a knob (Knob 1), as well as the TREMOLO SPEED (Knob 2) and TREMOLO DEPTH (Knob 3). This makes the designing of clean tones more convenient, for clean tones tend to use tremolo effects very frequently. The names of preset patches incorporated in MAGICSTOMP and comments on tones are for descriptive purpose only. Reference to product names, trademarks, artists and songs is made for the sole purpose of identifying products and sounds studied for modeling and describing the sound nuances Yamaha attempted to create through use of its proprietary technology. Such reference does not constitute representations that they physically possess equal qualities, and does not imply any cooperation or endorsement by such manufacturers or artists. The products and trademarks are the property of their respective owners.  Tremolo P49: OptComTrem A tremolo effect with a natural, gentle... P50: PanTrem When directly connected to a guitar...