For quality I can not say anything bad, everything is secure, provides high quality is made and feels good. This is also confirmed in weight for the little it's really powerful.
Both outside and inside, the Go + Play delivers a reliable sound. He is incredibly versatile, whether you discreetly sonicated a room with music, or if you use it for a wild party. Even at high volume it brings ordinary bass that envelops the room or the terrace.
I want here now do not write a novel, but I can say that it reflects a clear midrange and pleasant highs, coupled with the bass it's a Träumchen. I run him mostly through a 3.5mm jack cable, but also the playback via BT's super, should you can charge it through the USB connection and simultaneously via BT continues to stream the music out of a juice.
The compound is very stable and provides the same sound.
Since I run it always above the normal current, I can not say anything about the battery life, (it come in mighty D cells), but have heard from others that he did not play so loud and the bass is heruntergefahen.
For me it is indeed a nice gimmick, but wiegesagt I run him exclusively about power.
I have not regretted the purchase and look forward every time I was able to convince another of the Sound.