Not for me ... but may be for others?

The product works 'good' (see the end of comment) with apple devices I have at my disposal, but no volume control on Android devices (not hybrid product so) which does not suit me at all and justified my return to the product.
Also the sound is not very good compared to the model around 70 (I have no reference in mind, but always with Sennheiser intra).
The bass not seem bad when operating in standard volume (about 3/4 of the power), but in full power, they are particularly distorted and lose accuracy.
For the rest of the spectrum, I had to amplify equalizer and the result seemed more than correct (unlike low remaining ugly in my ear).

In short, good headphones ONLY if you have a apple device or they are entirely dedicated to him and that preference musical term is not focused on the bass.