For those who are serious about their music, such as sound engineers, musicians and producers, a decent pair of extended frequency headphones is a necessary addition.
Sennheiser has pushed out its HD 380 Pro closed back headphones use high-power neodymium iron magnets, offering a wide 8-27,000Hz frequency response, detailed sound reproduction, sound pressure level up to 110dB, and an attenuation of external noise up to 32dB.