A line out signal is a specific voltage and impedance standard. The headphone out can be set with the right gain to approximate the correct line out level if you get lucky, but the impedance is still 'off' by a bit.

Unfortunately, some consumer equipment will muddy the waters by labelling one output as both.


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.