You need a reliable MIDI interface. The GR-33 has a 5-pin DIN MIDI In/Out. You do not need USB.
In your DAW, disable "Local Control" on the GR-33 (System > Local Off). This stops the GR-33 from playing its own sounds. Now, when you play your guitar, only the software synth in your computer makes noise. Roland Gr-33 Editor Librarian And Virtualizer
Imagine this workflow:
This level of expressivity is why guitarists like Pat Metheny, Robert Fripp, and Reeves Gabrels have used Roland guitar synths for decades. The GR-33, with proper editing tools, brings that power to the everyday player. You need a reliable MIDI interface
