Hello everyone, I have a problem with my Sennheiser Momentum 2.0 Wireless. In passive mode they are perfect, almost indistinguishable from the wired version. The problem is when I turn on them. Sometimes (but now very often) in active mode (both with and without the cable) the sound is very bad. Specially in some songs and in some parts of the song, there is a terrible "screech". The noise increase with the increase of the volume. It's like if some frequencies (I think it's the 4kHz frequency) are distorted. I think the problem is with the ANC because also if I use them with the cable and then I turn on them, the problem appears. Has anyone the same problem? I asked amazon for a replacement, but also the replacement had the same issue. So...at this point I think that this ANC is a ****. What do you think?