How the H E double hockey sticks do I stream music?!

Hello everyone (reading this),
I just “finished” building my two channel, living room system, and I’m very happy. I use a turntable, CD player and a headphone amp. Now I want to add streaming to the mix. In my kitchen I use a Sonos one with Spotify, and I love it. The ease and having music always available is great! So now I’m looking for a way to plug something (this is where you all come in) into my DAC (USB) that allows me to open Spotify, choose a song and jam out in my living room. I’d like to get something from around $300ish and under, that’s Bluetooth in and USB out, that works with Spotify and sounds great. If you have suggestions for anything above $300, I’d still like to hear them for future upgrades. Thank you so much for any help y’all can give. This is a wonderful community, and it has already helped me out so much.

*Also... I’d like to use my phone to control the music.