I do appreciate everyone’s willingness to help, but none of this makes any sense (or works).
I just tried again using Apple’s own Lightning to USB C cable connected to the Tone 2s USB port and the other end to my iPad. Here’s the cable:
Supplied power to I2S using a Khadas USB C cable from a Tone 1, and also a standard USB C cable
Everything lights up and controls operate fine, but Tone 2 DAC does not show up as a choice on iPad.
I believe this requires a firmware fix…there should be no need for a “special” Tone 2 to Lightning cable.
Again, does anyone actually have their Tone 2 working with an iPad or iPhone?