I just recently purchased the Philips Citiscape Uptown headphones (http://www.head-fi.org/t/612677/review-philips-citiscape-uptown-updated-sept-13-2012), and they're working fantastically in my iPod, phone and directly into the computer. However whenever I plug them into an extension cord (some cheap one I picked up some time ago), they sound like absolute garbage. Every other set of headphones I plug into this same extension cord sound pretty much the same as when plugged directly to the source.
I'm wondering if there is anything unique about extension cables and cord controls. The only difference I can tell between the Uptown headphones and other ones I try is that the Uptown have gain control and a single button mic control. As a side note, when I have the Uptown headphones plugged into the extension cord and hit the mic button, they sound just as good as they would when plugged directly into the source.
Edited by kidfiction - 9/17/12 at 1:23pm