Congratulations! If you get a pair of these Paradigm PW300 on sale you will have an entire streaming system. You won’t need an amp because they are powered speakers. You can download an app to your phone and stream from many sources such as spotify, pandora, tidal, and even local files you already own.
Review:
https://www.soundstagesimplifi.com/index.php/equipment-reviews/32-paradigm-pw300-wi-fi-loudspeakers