Hello everyone. I've been listening to CDs and LPs for years but a novice of digital streaming. I listen to Spotify in my second system in my reading room by connecting my PC to a Schitt USB DAC and feeding to a tube amp and bookshelf speaker.

I want to incorporate Spotify playing in my main system and want your opinions and suggestions on gears and connection method for a high quality sound reproduction. The Marantz SA14 SACD player I am using has USB input and can be used as a DAC. Will it be better to play Spotify through a streamer than from a PC? Which DAC you would recommend? I don't listen to hi-resolution files, only Spotify and sometimes Tidal. Is connection through LAN much better than wireless?

Thank you.