I own both of these Ba iems and both of them distorts in the left channel on some mid bass notes. I find it odd since i have not played them very loud and i don´t have this problem with any other IEMS or headphones. And why is it only the left channel that distorts and crackles? I can´t imagine its a BA-thing, and since it is only audible with the Sonys.. It makes me wonder.
It´s a mystery that i was hoping the forum could solve for me :P