Welcome to the forum. I don’t know what the SY35 is so I’m not sure how to help. My first impression is that, if it’s connected via USB, then you do not need a separate audio interface (a Focusrite Scarlett, for example). You would need that if you decide to add vocals or record anything with a mic.


BIAB 2026 Win Audiophile. Software: Fender Studio One 8, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Presonus Quantom HD8 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.