Deduction for the sound. Compared with the Logitech UE Smart Radio, which I had previously, the sound is rather moderate. If a play app is running, the device also makes it quiet noise. As if it was not able sufficiently shield the sound generation of the CPU. Ditto when operating the touch screen. As always happens only briefly, but it is not a drama.
Conclusion: Because of the features I would buy the device at any time. Too bad that the developers have not given more trouble with the sound.