This is something you can accomplish very easily in a ESP32 form factor, streaming audio over wifi/bluetooth. However, it doesn't fully deliver the same experience; the goal was for it to replace your phone, so it needs to support a lot more functionality such as data persistence, offline support, notifications, cellular, maybe some form of visual IO (the laser projector), etc.
From my perspective I was just interested in the excellent industrial design, which is something that is virtually impossible for a DIY setup to attain.
From my perspective I was just interested in the excellent industrial design, which is something that is virtually impossible for a DIY setup to attain.