Originally Posted by Rodney Gold
You could try use an AD converter on your sub outs, they are not expensive these days.
I second that as the least cost solution.

Oppo UDP-203, Sonos, Nvidia Streamer, Fire TV 4K, Trinnov Altitude32 into Dan D'Agostino Momentum into Wilson Alexx, Paradigm Sub 1, Monitor Audio In Wall surrounds, JVC NX9