The lack APTX support makes very strongly bemerktbar on quality playback of FLAC files. Here the speaker proves indeed that he has a very rich sound and definitely great for the garden, lounge, kitchen etc. Suitable, but simply a lack of other sources and inputs. A lack of support APTX pulls the device simply gone to ground under their feet.
It may be that the Onyx Studio for sound enthusiasts perhaps the wrong device is, but I see a full support of BT 4.0 and also an old blade input as standard equipment, which in this case unfortunately both absent.
ADDENDUM: I have 300 BTX opted for a small additional charge at the end of a Heco Ascada with whom I am much happier. The Heco Ascada is made of wood, high-quality and also supports APTX and playback via jack. In addition, can also simultaneously charge your phone on the speaker here the handset.
In direct comparison with the onyx Studio falls during Ascada 300 BTX also the quality of the BT transmission immediately. Specifically, the heights and details adorn benefited here from better transmission standard and makes gets a very clear sound. Too bad that Harman has Espart here at the wrong place. Since Heco has currently with the Ascada the better product in the same price segment.