I'm selling my Sony WH-1000XM4 headphones. They've recently had a new pair of Wicked Cushions replacement ear cups fitted. the battery still holds charge well. *please note* - the headphones had the issue not long ago where one of the noise cancelling microphones inside the ear cups started giving high pitched feedback when noise cancelling was turned on. this has been resolved by cleaning the microphone with isopropyl alcohol, but since then, the right ear cup sounds somewhat muffled when music is played with noise cancelling turned on. this does not occur when NC is turned off. I believe this can be fixed by replacing the microphone inside the earcup, but I lack the soldering skills to do this. the headphones otherwise work well and are in good condition.
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