Just wanna check with you guys, my area is warm and humid throughout the year and the level of salt content dissolved in the air is pretty high. I keep all my headphones in a dry box and wipe them clean with a slightly damp cloth after every listening. However, for the AD2000s, I just can't seem to stop the shiny metallic ring or rather, the non paint coated part that shows the raw magnesium, from oxidizing...Its kinda non shiny and matte with like a layer of oxide on it. Any idea how to remove that? Its dead ugly and bothering me....