When I first got them I drove them in at medium iPod touch volume for around 40 hours. No a month later I have perfect sounding sound but I have driver crackle of many of my songs when I listen to them at full volume, which didn't happen with my old pair, also recently I have been getting driver flex.
I am asking should I call mp4nation and ask a refund as my headphones are faulty or should I live with them as I live in the UK and would take around 2 months for them to come back to me? Not forgetting the P&P
(Sorry about language wrote on my HTC HD2)