Purchased late October 2019 to December 2019, left audio channel faded. I'm not exactly sure what the problem is, both left and right audio were fine, but on some units I tested, the left audio only has 15-20% output volume compared to the right. The cable withstood a few hefty tugs when hung from things like chairs or doorknobs - it's not clear why the effect is faint sound versus no sound - before "my problem" the sound quality was actually quite good decent, the bass sounded deep, albeit artificially voluminous. I've also struggled with stuffy ears; Admittedly, my ears are smaller, so I was constantly adjusting the position of the headphones. NOTE: The ear pads slide up and down for convenience.
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