It would be better to use the Line In if your synth provides Line Out jacks and your soundcard has Line In.

This questions seems a little old, though. Don't almost all synths have USB connections now?

Above all, I detest those 3.5 mm mini-jacks. It's so easy to have one get bent inside and stop working, or get intermittent.


BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.