Right, I'm probably being really stupid here, but what the fuck is this about? I've just had some relatively expensive (£30) earphones delivered, and the sound is absolutely awful. However, if you press and hold down the button halfway up the cable , the sound's great. I've had this with cheap earphones before and assumed it was a weird design fault, but never with expensive ones. Previously I was able to twist a paperclip round the button to act as a kind of clamp, but that won't work with these ones.

http://www.amazon.co.uk/dp/B00GAIP5CO/ref=pe_385721_37038051_TE_3p_dp_1

I'm sure I'm missing something really obvious but I've read the manual and there's no mention of what I'm doing wrong. It's pretty annoying.