Well here is the thing, I have bought JVC HA-M5X before let's say 1 month, so I have tested them on iPod and on another Machine but when I plug them in my PC they seem awfully low. They are 2 or 3 times louder on iPod or the another PC I have tried, they sound like I've plugged em in my phone. Here is a video and I'm sorry for my poor quality.