Loudspeakers for demanding music?

I was looking for a portable speaker for sophisticated music, that is a speaker of the clear sounds both in the heights, as well as clean basses. For the heights I chose a music video with the world-renowned sopranos Rene Flemming and Anja Harteros I grossed over my Ipad Mini II via Bluetooth.
From my music library I chose a polyphonic piece by Bach ("Rejoice ..." from demWeihnachtsoratorium I), which I grossed about EQu App. The piece has dynamic deep voices and singing high notes.
The speaker should achieve at least low volume, so about 10 people can hear him well. Alternatively, I also tested the Bluetooth pairing with my three year old Android Smartphome (HTC).

Following a recommendation I compared with a musician:

Creative SoundBlasterRoar (1100g) size approximately 200 x 115 x 55 mm

o Voice: not spatially
o orchestral parts: differentiation but as behind a curtain
+ Volume
+ Bluetooth: Pairing with no problems
+ Very nice turn-on effect, voice announces battery status.

Extra: You can pair two speakers, he has a recording function and you can also use SD cards.

Sony SRS 5 (1130g) Dimensions 220 x 120 x 50 mm

+ Voice
+ Orchestral parts: Very differentiated
+ Sound room-filling
+ Volume
+ Bluetooth: Pairing with no problems
+ Charging function for external devices

Extra: With a special sound button you can adjust the sound volume for quiet.

Both device look very valuable - I had often look for the price, my feeling told me significantly higher.
The Sound Blaster looks stable, the Sony noble.

With the larger Portable TDK A33 (1200g), Grundig 500 (1300g) and the Philips Fidelio P8 (1500g) may be, Bose SoundLink nor alternatives.