I recommend Bluesound Node 2i for streaming to your audio system. You could also use iFi DAC to see if you like the sound of Node 2i better through iFi vs it’s internal DAC. It’s a great startup value priced streamer with a internal DAC and gives lot of option to stream files off Tidal, Qobuz and FM stations. I suggest you read up on Node 2i on their website.
And by all means use Ethernet connection with Node 2i as it will sound better than WiFi.