SOUND
Sonically it is not a high end speaker because he has a pretty center-weighted playback. For music playback lacks the heights of presence and clarity. I him but this is primarily insets for playing podcasts less critical for me. Moreover, one should consider when evaluating also the relatively low price.
VOLUME
The speaker has enough power to provide sound for larger spaces (for a party, it is sufficient but not sure); This succeeds even relatively distortion-free.
POWER SUPPLY
The speaker has in addition the included AC adapter also has a battery compartment so that it is sometimes well-suited for the road.
OPERATION
On the back there is a mechanical on / off switch. Top or on the front he would certainly have been placed conveniently. Is located at the front of the pairing button to establish a new Bluetooth connection - after the first pairing, the connection automatically restored later. Otherwise there is a + and a - button for volume control on the front panel as well as a phone jack on the back is a non-Bluetooth device to connect.
All in all I am quite happy with the speaker - who wants more must also surely pay more.