The XtremeMac IPU-TAP-13 Air Tango 2.1 speaker has a simple, but not stunning design. The silver handle looks a bit like the handle of a shopping bag. But the design adapts to different styles of interior, overall it's inconspicuous. It brings with no battery. This one is tied to an electrical outlet and wirelessly really it does not look well. The I recently tested Sony SA-N5510 costs only little more but has a battery and a significant deeper bass. However, he is also twice as heavy as this speaker (4 Kg of Sony, 2 Kg of Tango). The sound is pleasing to my ear, the highs and the bass are not clink, ok. The sound is very clear, a little clearer than that of Sony, the latter has but more bass. The device can be used to recharge etc. Ipod, Ipad and simultaneously play music, it has a USB port. This works fine. Thus, the device replaces a docking station if you use the supplied Apple cable. In the last version of this review I wrote, I would have no Ipod Touch 4G, so it would have been difficult to test the AirPlay function. Well, I bought today such instructions and faithfully attempts to the speakers connected to the grid. The touch was connected to the network, but it did not succeed to use this to get even the Tango to the grid. I was about to give up in frustration when I was using my very old Windows XP EEPC tried again exactly the instructions for PCs and behold. It signs and wonders, the device is on the network and can now be controlled from the touch also the speaker wirelessly. The sound is significantly better than when you try it on a CD player, as described below. The problem in trying with the touch was that the Touch Although presented the network is available, as well as describes the tango but could not connect. It was only when he was joined by hand over a specified website and thus the Netzwerkennwort entered again directly for the network, it worked. There are in the manual so two methods I have used Variant 2. This is an important point of criticism: The instructions are kept too short, declared no possibility of errors and there are no reasonable app. There is a right of tinkering to get the device to the mains. Since there is an easy to use app as they bring other devices of this class of product. Otherwise, the speakers with any device can be operated so that a normal line-out has output. I run it with a CD player, works well. Another practical feature is that you can toggle manually between the various sources without having to pull out the cable. So, you can leave in the cable for the Nano and then still switch to Aux. You can even back and forth during playback. However, the then manually. You can select the AirPlay function via the touch, but it's no remote control. Conclusion: This is an Apple device that fully developed his qualities only with equipment of the latest generation of Apple. This is true of sound and usability. The star deduction there for a little too lean bass and really lousy manual, as well as the fact that the variant of the device via the touch was not working. But overall, the sound, all Motzerei is defiance well. The price-performance ratio is right.