[. . . ] Model: iB1 Stereo Headphones with In-line Volume Control Using Your iHome Headphones The earpieces are marked "L" and "R". [. . . ] To protect your hearing, always start listening with the In-Line Volume Control set to a low level and gradually increase the volume to a comfortable listening level. Note: You may have to adjust the volume control on your music player as well as the In-Line Volume Control on your headphones to find the most satisfactory sound level. If one control is set too low and the other is set too high, the sound may be distorted. Try setting the volume control on your music player halfway between the Min and Max settings, and then use the In-Line Volume Control on your iHome headphones to make final adjustments. Listening at high volume for long periods of time can result in long-term hearing damage. For your safety, do not use headphones if they would prevent you from hearing warning sounds, such as while driving a car or motorcycle, riding a bike, etc. [. . . ] This is normal and not an indication of any problem with your headphones. [. . . ]