High frequency beeping and other problems

The cube is really pretty small and well finished (no cheap plastic but a kind of hard rubber). The one-knob operation with Play / Pause is good and the connection is established via NFC very practical.

BUT

- There is an extremely durable high-frequency nervendes Pfeiffgeräusch from the speaker
- In addition, there is a sound, what we hear especially in soft music
- The Cube goes continuously from when times briefly the connection is disconnected (cell phone out of range)
Normally, the phone connects and then re-playing automatically - which of course does not work, because the stupid thing off :-(
- When playing back video on the mobile phone there permanently sound dropout - as if that thing ever go into a power-saving mode as soon as a few msec no sound. Then he turns and not fast enough again.
- Do not connect via Bluetooth then takes too much too long: loose 5-10 seconds. To 2.5 seconds would be normal for Bluetooth standard.

The sound is otherwise acceptable for the size you can not expect more probably - but the noise is very ugly (possibly the speakers was also damaged, a second, I have not tested)

At least the support of anchor is great and you tried to find a solution.