Just bought an RS520, I took a bit of a chance having read these forums and the problems some users here have suffered. I can only say, wow this thing is incredible. I have a really hi end hifi system but bought this as a stand alone for another room. It is a very impressive piece of kit and sounds wonderful and is the best streamer I have heard and improves substantially on the Naim Atom it replaces.
It worked straight out of the box and no issues so far, but only 48 hrs in.
I was expecting the rose app to be clunky from what I have read here but it is brilliant, some minor counter intuitive stuff but overall a great interface.
For a newish brand it beats the pants off the Atom which has rave reviews. I am so impressed I have ordered an RS130 to replace my holo audio red in the main system.
The build quality is great and the screen is stunning even if a purist might say screens affect sound quality.
I do not post this to undermine the problems others have undoubtedly experienced, just to give a little credit to Hifi Rose for where this product is now.
I hope this product continues to perform as it has so far, Well done Rose