I started out with a 6s and a Schiit Modi 3+ a few years ago. It was very listenable but not impressive.
On the rare occasions I listen to music on my HT system, I sent it to a Chromecast plugged into the HT receiver. Also just listenable. But one day I connected the old 6s/Modi setup and it was a big improvement over the Chromecast. The 6s has excellent WIFI reception which probably helps.