Good question. I never bothered to make mine mono, and they work fine in stereo, although I'm sure I'm not hearing stereo from my phone. I use a Blackberry, which makes file transfer and choice of custom ring tones very easy. I can't speak for any other phone format.


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.