I have been the happy owner of a Wiim amp ultra for 9 months now. The WAU powers my Fyne F303i front main speakers in a stereo setup. I use this setup for music and movies and TV watching.
I took the plunge and ordered two Wiim sound lite speakers to use as surrounds (along with stands). I set everything up yesterday. Wow! What an amazing system!
It was easy enough to set everything up in the app. The WAU acts as the master. There is a convenient "Enable home theater" slider in the app. It is easy to switch from stereo fronts only, to 4.0 surrounds when watching movies.
I tested the system with several movies yesterday. Really impressive sounding! I am loving what Wiim is offering buyers with their high performance and convenient products. Don't hesitate to add two Wiim sound lite as surrounds if you are in the Wiim ecosystem.