Convert USB to SPDIF

The Berkeley Alpha USB and Denafrips Gaia converters are both well regarded, but probably overkill for an AVR.

This should work.
https://apos.audio/collections/brand-spotlight-matrix/products/matrix-x-spdif-2-usb-interface

I have a Melodius Audio MX-U8 that replaced my Musical Fidelity V-Link II.
The V-link II is 24/96.
I will sell it if you are interested for $100 usd which includes shipping to the lower 48 . Contact me if you are interested. It is actually very good sounding

yeah, I don't want to spend more on the converter than the price of the AVR.
djones51 suggestion might work, although that is getting towards the price of buying a budget streamer.  I just wanted a quick fix to replace my Node2 in this system which is dead in the water after the last update and since I am not using this MacAir with Audirvana loaded at the moment I thought I might try to repurpose it.  There is a bargain basement convertor out there for about $20 but that can't be much good.  I have a first gen Audioquest Dragonfly that I am not using maybe I can stick an RCA cable (are they called mini cables?) that is single ended on one side and double ended on the other and attach to the analog inputs of the AVR while I try to get the Node fixed

Schiit Eitr. Add an Acoustic Revive REM-8 to clean up the AC noise and the quality is superb