Can anyone here tell me if other USB to USB-C cables work for the Tone Board? The grey one that came with my Tone Board is defective, the USB 2.0 side keeps disconnecting with the slightest movement. Would a USB 3.1 to USB-C work ok, or does it need to be USB 2.0?
They should work, yes. Right now I am using it with the cable that came with my phone. In fact, you may be forced to replace the original one, as it causes problems; check out this thread on their forums:
Audio cuts out randomly. I've had the exact same issue and fixed it by changing the cable.
Sidenote: I haven't measured it, but there seems to be a problem of some sort with the original cable. Since I changed it with another one, I started using it to charge my phone. I noticed that sometimes, when I touch the cable, while it charges, I get a small electric shock (like the one you get from, say, a 1.5V battery).