The monitor outputs are what is known as "line out" if you want to read more about it. As you discovered, it is similar to but different from a headphone signal.

I'm surprised you learned from here that mixing with headphones is preferred. It is not. Headphones should be used to test a mix but not as the only way to make one unless you absolutely cannot use good nearfield monitors.


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.