I'm using this headphone for 4 months. IT IS the a versatile headphone of a remarkable quality for the price (17 Euros). The spectrum is well covered frquences despite some bumps in the mediums dsagrables quite acute. Its performance is satisfactory and allows it to be used on virtually no 'matter what kind. It remains all the same headphones amateur, but of an excellent quality price. Downside: the settings are virtually non-existent and the headphone does not hold itself in an optimal position.
With the exprience, so I think I 'invest instead in the HPX2000, of much better quality and more comfortable for 12 euros more.