Air Play and internet radio are fine. The remote is a little confusing. But who is the app brings to his Smartphone or iPad may facilitate very here. The app is really great.
From this you can adjust much. Even on the Media Server (NAS) can be accessed.
Sonically, the device is very good.
You can look at the menu of the receiver on the TV and use the HDMI connection. which is more comfortable than in the small one-line display.
Of course, this receiver has points which are in need of improvement. But on the whole, a good device for a little money.
A detailed user guide is available on CD here. This one can also look in the AV Navigator app on the iPad.