Will performing a factory reset on the RS250 bring it back to the way it was out of the box a few years ago (when new)? After the recent firmware update I feel that the unit sounds much worse. Less open and smooth. Will a complete reset solve this issue?
If you believe that this is even remotely possible, sure.
I highly recommend performing a factory reset. I have the RS150B, and up until the latest update, I frequently had to reset the device to factory settings. The reason was that the sound in the bass range would change so drastically that listening to music became unenjoyable. The bass would become so boomy and loose that it would cause headaches. My colleagues and guests also noticed this booming and droning effect. Whenever I reset the settings to factory defaults, the sound would return to normal.
After the latest updates, I no longer notice this issue. What’s even more remarkable is how the sound quality of AirPlay 2 has changed after the update (even though it shouldn’t have). Now, you can listen to Tidal or Qobuz via AirPlay without noticing any difference compared to the built-in apps.