This is a really fiddly device to use, with a lot of quirks and issues that spoiled the experience (for me) - and while it’s very cool in what it can do, and it results in excellent sound, please make sure you read up on the issues around it carefully before buying one.
Chord have an unusually extensive FAQ for most of these issues - and it’ll give you a better idea of how this thing works in practice than the user-manual.
For example, if you want to play back music from the microSD card slot you’ll need a third-party DLNA/MPD compatible control point application (the recently released “GoFigure” app, from Chord, is really for configuration - there’s a very limited play-back option in there).
And using it both at home and on the go results in a lot of faffing about changing the network/mode configuration. Sadly there’s no seamless transition from, say, using it as a Roon end-point at home and as a DLNA renderer (for microSD card playback) on the go. You’ll be waiting for timeouts or force-closing apps or reconfiguring the units connections every time.
I liked the potential, but I returned mine as it was just too much of a pain to use. Hopefully the “2Go” version (the Hugo 2 equivalent to Poly) will address these issues.