Because the built-in speakers in the iPad, although the heights are well reproduced, but the centers are, depending on the music too dominant and the bass too weak due to the small speaker volume.
The sound quality of this speaker is compared with the internal of the Ipad, very good.
The centers are well reproduced and the bass is tremendously much better what is heard for music very well,
even when an audiobook example. the voices therefore hear significantly better.
But the great weakness of the speaker's volume. Because that is, compared with the integrated speakers in the iPad 3 is not higher, but about the same.
From such a great speaker (compared to the internal), one would expect just a significantly higher volume.
Because this expectation is not met, I prefer from 2 star.
From me, there are only to those a buy recommendation,
the only better sound quality, but not need a higher volume of the Ipad.