The Berkeley Alpha USB and Denafrips Gaia converters are both well regarded, but probably overkill for an AVR.
Convert USB to SPDIF
I searched the Forums but didn’t find anything recent on this. I wish to add a 2010 MacAir running Audirvana Plus to my basement system. NAS and router are upstairs. My AVR is anAnthem MX5 channel that doesn’t have a USB input. What is the best way to convert USB to SPDIF? I found some cheap converters but would like add something decent...