Just in case it helps, you can access the installation guide and the latest Fiio driver for the K7 here:Hi,
Today I plugged in my new K7 but it's not changing colour with different file resolutions. Just blue.
I'm on Windows 10
Using MusicBee - Output WASAPI (shared)
I installed the Fiio driver from https://forum.fiio.com/note/showNoteContent.do?id=202105191527366657910&tid=17
I have an error message: "Lisk Audio USB Audio Device Control Panel: The driver DLL required to access the device is missing." And so the Fiio Control Panel will not run/open.
In Device Manager the Other Devices has "GuangZhuo Fiio Electronics Co" but has a yellow warning triangle.
Any help appreciated.
Thanks.
https://www.fiio.com/newsinfo/770688.html
Also, to avoid Windows resampling the digital sound output to a fixed frequency, try selecting WASAPI Exclusive as your output device from MusicBee, Foobar or the player you like to use. Then, the volume knob light would change its colour following the file’s sampling frequency.