Hey,
I have a little question regarding build quality. I owned my Celestee for about a year when something in the left earcup started to rattle (with or without music playing). I got the whole headphone replaced and now after a week something in both earcups is rattling.
Did anyone of you experienced the same thing or did I got two Monday products?
Thanks for the help!
I don’t know what a Monday product is but my Celestee doesn’t rattle, even though I bought it used and am the third owner, and my teen son keeps borrowing it. I could just be very lucky.
A Monday product is one that came off the assembly line on Monday when workers were still hung over from the weekend. 
In ornamental glass production they talk about “end of day” pieces. Often deformed when workers wanted to go home and didn’t allow sufficient cooling time
And then there are Friday afternoon pieces, when they just want to start the weekend.
What does that leave us with? Wednesday morning, after the first coffee break but before lunch?