Topping D10s DAC auto standby?

[Nutul]

Does this actually work? and on which model RPis?

I tried this on my Linux box; it has one level less of "port", and it works for my audio-interface: it disappears from the system, and then is up again and takes the audio focus again; all without disconnecting the USB cable. It does not go on standby itself, as it doesn't do it on its own.

Yhe level of BUS / PORT / PORT described in my example is 1:1 to what I see on my Pi4 on moOde 8.3.7

Later, or tomorrow, I'll try it with the same audio card and report here.
Trying, though, could only work, or result in a "Device not found", as I got several times before actually understanding the structure of the device USB path.