Review on Hi-Fi 3.5mm Headphone Extension Cable 2-Pack - Oldboytech [3.3ft/1M, Nylon-Braided] Male to Female AUX Extension Cord for iPad, iPod, Speaker, Smartphone, Tablets & More by Adam Nelson

Firstly they are for music and mic only. If the headphones have volume and mute controls, they will not work. The reason I have trouble with them is that they are not shielded as shown in the photos. I bought these for a wiring project I'm working on. I bought these based on the photos showing shielded cable. If I didn't need to cut wire for my project I would send them back. I tested the other cable that came with it and the sound was just as good as if I hadn't extended the cable, but you've lost the features listed above.