@JasonNYC I had USB digital out working with my CT10 on the first try a couple weeks ago but have been unable to get it working again.
I've tried 3 different OTG cables and 3 different DAC/amps. A couple of times my CT10 showed 'USB output' (below the USB icon in the drop-down). The icon lights up after connecting both ends of the cable however, touching it (on/off?) shows a brief circle animation but I still get no sound). The same OTG cables and DAC/amps work with my Android phone.
Is there an exact step by step method to get USB digital out working reliably (and repeatable) on the CT10?