MrWalkman
Headphoneus Supremus
Best to state which DAP and Switcher 3.0 WM1A/Z or WM1A/Z+
I also recommend just using the new firmwares instead of using the previous ones with the blue switcher.
This is just because the new firmwares makes this so much easier, and also to not confuse people when we're gonna talk about Switcher 3.0, as the switcher is now in the firmware itself.