About 6 months ago I bought a pair of Panasonic headphones for 30 bucks, they worked great but the left speaker went out after about 4 months. So I went and bought a new pair of the same ones because I kind of liked them. These developed the same problem after about 2 months. So I decided to buy a pair of Aiwa's for 30 bucks at Best Buy and these got messed up after 1 night! The left speaker sounds normal, but the right side is much more quiet. Yes I checked the balance levels, and another pair of headphones worked just fine. Just wanted to rant about my headphones ordeal:|