Got mine in today, and gotta say, I'm a big fan. Small desktop footprint, the volume knob feels nice. The whole thing sounds transparent, but we all kind of figured that.
Anyway, as far as usage:
It's the same remote as the D50s, likely other Topping products. Much easier with remote operation, since getting into the menu with the knob and button alone requires a weird power-off sequence, I think? Just use the remote.
The line outputs and headphone output have independent volume settings!
The Bluetooth works well, my iPhone doesn't auto-reconnect which is nice so that I can only connect when I want it to do so.
I think this one's a keeper.