I have been using my sennheiser headphones for more than a year now. No problem with it so far. I bought my headphone from bay bloor radio in Toronto. They have an online store if you want to check . My sennheiser is portable PX 100/II model.It cost me around $100,but completely worth it. If you buy a low quality headphone it wont last a year and you will end up spending same amount for another one. I would recommend you to invest some money and buy a decent headphone that will last at least 2 years