Most flagship phones have removed the 3.5mm headphone jack, leaving you with poor options for audio quality.

USB-C is good for charging but bad for wired headphones: any little movement of the USB-C plug can cause the headphones and sound to disconnect. Bluetooth is also a lot poorer music quality compared to wired connections.

Why not just use your mobile phone ? (I’m not very knowledgeable about audio stuff)

I would if manufacturers stopped removing the 3.5mm jack from flagship phones.

Or if UBC-C wasn’t such a poor experience for wired headphones.

Good to know, thank you for sharing your experience! I may go with a different device and install Rockbox instead.

This is analog in the sense that it has a Digital to Analog "Cirrus Logic WM8523 DAC"converter and a 3.5mm headphone jack, so does indeed enable analog if you use a wired headphone, and it is absolutely a step in the right direction over shitty bluetooth quality audio.

I discovered Digital-to-Analog converters and vacuum tubes during the pandemic, replaced my whole setup for headphones and speakers after discovering Schiit Audio.