To fascinatingly simple, with revisions

After much hesitation, I had this part ordered as connecting part between my aging Nokia Express Music and my Koss Porta Pro, because the 3.5mm jack can not last forever.
With low price I had additional concerns, but the description (small, lightweight and suitable for Audio Music) promised at least, not completely off the mark.
Operation is simple, it turns on and then activate the Bluetooth function on the mobile phone. I can not explain it, but the sound is better than the direct cable connection headset phone with gentle songs. The treble and bass are more present. The small part provides a more than strong performance for the headphones. The MOCREO input can withstand a lot before additional stress injuries occur. And the signal-to-noise ratio is enormous.
Thus, my first review was very positive, unfortunately I had to prematurely reported.

The sound of my phone's has been improved with gentle songs, but most songs are too distorted, because of the bass, which happens to be the rule in Pop etc. Thus, I have to give a different buyer subsequently law.
A direct comparison with a Speed ​​Trap Link Bluetooth adapter shows that distortions are uniquely generated by MOCREO Clipper.
There are also serious doubts about the battery power.

But why then 2 stars - because the device may be suitable for simple conversation transmission and thus for other clients could be interesting.
For me, the adapter is not to be used.
I am very disappointed.

Addendum 14.05.2015:
A new test with a Bluetooth transmitter TaoTronic gave a really unobtrusive reception without distortion. One can speculate whether the modulation of Taotronic station is less, but still it remains somewhat problematic when the recipient first needs to check for compatibility with standard per se transmission paths.