Static streaming iMac to Schiit DAC, static

Not sure if it is the issue but have heard of incompatibility with some cables and Apple products. There is a chip inside the cable and sometimes a firmware update with the computer makes the cable incompatible. Seems it was more for lightning cables though.

Try a different brand of cable and see if that works.

Is it a USB-C to USB-A cable or is there another adapter involved?

Thank you.  I just solved it.  I have a USB to optical converter in another system, so I set that up with a short USB cable and long optical cable to the DAC.  Now, no static.  It seems I have some RF in my listening room that the longish USB cable was picking up.  I should have realized this as a recent power cable upgrade made a nice difference, probably in part because of the RF shielding these power cables have.

Thank you for your help.