The package includes the speaker in cube form, a USB charging cable, an audio cable and a German manual. Used the speakers via Bluetooth or via a cable. It does not matter whether you connect the cubes now with a smartphone, tablet or through the audio cable to a PC or laptop.
Compliments first: When the speaker is turned on, you will hear no annoying English announcement. There is only a small sound that tells you that the part in the Bluetooth mode. Perfect that is, for example, for the office, because a loud English announcement can be not only annoying, but also embarrassing.
If the Avantek cube connected to a smartphone that selected on the smartphone music is played over the loudspeaker. On cubes even the volume using the + and can - be adjusted key. The title can be jumped back and forth. But the arrows are responsible. This too is a subject which is not any Bluetooth speaker can. I recently had a brand device from Creative, where the choice of title was not even on the device itself possible, but only through the control of the smartphone.
Was able to convince me of the sound. The basses are shown pretty deep, of course, singing sounds like. Gesprochenens acts not tinny. It rattles nothing. The highs, lows and mids are appropriate. I like to spend hours listening to music with this unit! It's just super pleasant. Not even my old expensive Panasonic Radio creates this experience that is even saying something.
If the battery to run out, the USB cable is simply connected to a power supply. You probably used mostly the power supply from its own smartphone. Here is how the competition also, that included no power supply. A full charge transfer at the outlet takes about one night.
Let. Times to the alleged 20 meters range Nope! Normally all Bluetooth devices support a distance up to 10 meters. Means: If Smartphone or speakers are more like about 10 meters apart, breaks the connection. Most of the units provide all not even the 10 meters. If a wall in between, the distance is even a considerably smaller. When Avantek Rubik's Cube is a 5-meter range with no obstructions between the two devices. So normal, but the specified 20 meters are really exaggerated. But I will try it here more devices to exclude that it is up to my smartphone model.
The cube is very well made. The surface is matte, which prevents fingerprints. It is non-slip in your hand or stands securely on a surface. The design is exceptional and stands out from the mass production of Bluetooth speaker.
Conclusion: I'm concerned there is a recommendation, since the Bluetooth speaker of Avantek is up to date, has Bluetooth 4.0 and there is even a detailed German manual. The sound is incredibly good, better than other speakers, which I had in my hands.