mini transistor tasteless

I found myself several times in the evenings but many parts where the music was sorely lacking.
I wanted to get myself a pocket enclosure to connect my Iphone and distribute my music in these situations.
The careful design and past reputation JBL directed me to this (the box at the reception is very neat)

After testing here is my conclusion (test done with the potentiometer at the peak):
POWER: Too weak as equivalent to mini transistor (2W only !!)
DEFINITION: incomplete because lack of bass (no wonder - information taken bandwidth starts at 140 Hz)
SPACE OCCUPATION: not even beeps in a room 3m x 4m - I is listening to 50cm to 1m hardly beyond

So I just turn to another system: Divoom Bluetune 2 (ASIN B008ZBZOW0)
this time of 20 W and with a more flattering bandwidth that starts at 30 hz.
More expensive but still affordable.
Hope this helps.