The bass is very present, and sparkling high and accurate psychics in turn are slightly recessed but are perfectly audible, the equalizer is V-shaped, which gives these headphones a very good listener.
Those that evoke a bad sound very probably received a fake copy because the original move serious is really the audio quality level.
I removed one star because I think the sound of these headphones, although very correct, lacks a bit of personality in relation to a stereo headphone Koss PORTAPRO genre whose sound is a more subtle and low tad significantly more accurate.
Frankly, for the price, these headphones Xiaomi Piston are to buy eyes closed for those who want to-ear with sound insulation and excellent sound, as I said the sound is really good.
By cons, if the sound insulation is not important to you, I further recommend the Koss headphones PORTAPRO which is almost similar price with a quality of its still a tad above.
I placed my order with Amazon Mulitou-EU, I confirm that these are original, I recommend this seller, but also these headphones that are worth visiting.