Question about Logitech Zone 900

The ACN does not work at all for me! Not even the fan of the computer is suppressed. I will probably send it back.

The active reduction is relatively effective and good. I compare it to equivalent models like Jabra. There is a significant reduction in ambient noise. On the other hand, it's an on-ear headset that covers the ear but not completely like a Bose QC or Apple Max headset and therefore the noise reduction will not be equivalent (I'm lucky enough to own these different models and have been able to compare). The connection is very good and stable and the microphone is good which makes it an excellent headset for conferences.