Raspi3B+ KORG DS-DAC-100

Hello, I’m KUNI, a beginner.
Output device selection is only HDMI or headphones.
Even if I connect the KORG DS-DAC-100 via USB, it is not recognized.
Please tell me how to connect it.

Your DAC doesn’t work on Linux;

I understand that this DAC doesn’t work on Linux.
I thought it would work on Windows because it was OK with other software,
but it’s unfortunate.
Thank you for your advice.

It works on Windows with the special drivers loaded. Volumio on a x86 is still Linux OS.