So I had earlier also Sennheiser / Logitech Headphones Headsets. But they have lost me.
The have a significantly better audio quality than the Wintech parts, but they are also 5-6x as expensive (30 euros or more).
So just to those here:
You can hear round alongside music thus in a good LAN, the sound quality is heard pleasant and overridden with quiet not.
The bass is acceptable, though not a Hifi bass, but sufficient for computer games.
The centers are also fully acceptable for the price, but I find the voice could be a bit better but then, however, it is sufficient in any case.
The heights are surprisingly well done :)
Conclusion: For the low price you do nothing wrong, they are also robust, and the volume knob also rips. Voice transmission is absolutely okay, could certainly be better, but for the price great! Who is stingy and buys the equipment for 8 or 9 euros, has at least safe hands for a while.
At least I know now that the reviews were not fake reviews here before, I was afraid;) But it is surprising that such cheap things can be so good.