My only criticism is that the jacks don’t click into it properly, and easily go to mono from stereo. Compared to Bose these are truly awful. IOW, not a perfect product despite the high price point. So far, love these. UPDATE - I am back here getting this in white, the black one is still staining the sheets, but it is so comfortable and my husband really likes it and hates to see me give it up and so we have decided maybe the white would be a good compromise. This product has the worst User Guide in the history of products and that is a very high bar because there are a lot of really terrible user guides out there. That being said, I can conceivably imagine someone listening to the 540ML and being shocked that they are listening to vinyl. I ordered a size 8 based off the reviews, which is a size up for me, knowing these shoes run small. Bought these for my mum who is currently working from home and has to use a specific headset for her job. Truly gives a sportier look on rear end.