The last point of the shortcomings (2k characters was not enough): there were noises in the headphones, similar to those that occur when you bring the phone to the monitors during a conversation. Words cannot express how annoying this constant "peeping" is. Bottom line: it's a complete failure. I have been a fan of Sony for a very long time, because. this is one of the oldest sound companies, and I didn’t expect such a meanness from them. In general, I could not imagine that I would sell a four on ebay in order to buy a three, which is a cut above. Unfortunately, seeing how all sorts of jubiels, or, God forbid, beats, according to the old tradition, go towards the bass, so that the membranes are torn from the German turnip (or whatever their consumers listen to), I still remain faithful to the senheisers and Sony, sincerely hoping that in the next series they will correct all the above-mentioned shortcomings. But if this is your first time getting to know the WH-1000XM series, then it's better to start with a triple or a deuce. It costs less, the charge lasts longer, and the sound is a cut above.