Does anyone have experience with the ANC function of these headphones? It says ANC, but open design. How does this affect the listening experience ? Thanks in advance

Good tga do these headphones really have active noise cancelling? When searching on beyerdynamics homepage no 990pro have this function

Hello together I'm thinking of buying the DT 990 Pro headphones and would like to use them mainly on my PC. However, I am unsure whether I only need an amplifier or an additional sound card. The ASUS Prime Z790-P mainboard is installed in my current setup. A separate microphone is already installed. What is important to me is a cost-effective solution. Does anyone have any advice for me? Thank you very much!

Is the 80Ohm or the 250Ohm version better suited for direct connection to the PC?

How many ohms do the 250 or 80 have?