The stand is otherwise in the operation is very simple, as it has on the rear load only an on / off switch, an auxiliary input and a Micro-USB input for. The volume is thus controlled by the tablet or mobile phone. The AUX cable and USB charging cable to charge the manufacturer shall submit graciously in with. A separate power supply is not included.
The sound I find better than the built-in speakers from Tablet very well and by far. I've been using this tablet holder as I said mostly to look at reports and for the holder is very suitable. Voices are clear and the rest of the sound also comes over very well. The Bluetooth pair worked without any problems and stable.
If you're looking to see a stable tablet holder for films or listen to music, can strike here. However, the use of the boxes is not limited to tablets, even if the holder is ideally suited for this. In principle, any Bluetooth enabled device can be coupled with the boxes, so you can sometimes listen to music from your phone through the speakers.
In summary: nice, stable and with a good sound.