If you're looking for a good headphone check out sennheiser headphones at Musicians Friend, it has high-quality dynamic speaker system which reproduces sound with deep bass effects. The in-ear design of this headphone reduces external noise, giving a music as that of the original. You can listen to music comfortably because of its asymmetrical cable design. Sennheiser headphones are compatible with iPods, iPhones, MP3, and CD players, you are ensured of a range of applications. With a frequency response of 19 Hz to 21 kHz, these in-ear headphones enable you to listen to a range of sounds.