Ah got it, thanks for the answer. It's weird though, since quite a few dongles don't have volume buttons, like the Hidizs s9 pro. What will the users do then?I can’t explain the technical reason why, but yes, that is normal, the volume is controlled by the S1. It may have something to do with battery draw since the primary market for dongles is for phones.
Congrats on your first DAC, you picked a good one!
And thank you! I cannot believe the things I used to miss while listening to music straight from a mobile phone. I fired up dreams by fleetwood mac on Tidal, and boy was I blown away! I really see what people mean when they say music straight from mobile sounds very digital, and the DACs give them more life.