HS60 haptic: Is that normal?

[Dragonblood]

Hello,

 

I recently bought the HS60 haptic headphones and I would like to compare my experience with someone else, who owns them.

 

The sound is absolutly without complaint unless I switch on the haptic feedback by turning the right headphone's wheel. Then I hear a deep hissing, just like you would hear, when you press your hands to your ears (first I mistook that for it).

To reproduce that sound it doesn't matter, which computer I plug them into...as soon as the headphones get electricity (like when the computer is just booting) and haptic is switched on. Ofc I tried every USB-slot on differenct computers including ones directly on the mainboard without any difference.

 

Is that normal?

[Dragonblood]

Update: My replacement of HS60 Haptic headphones also have that sound described above. But it's not as loud and not as unpleasant deep.