Beyerdynamic DT-440 Circumaural Open-Back Hi-Fi Premium Stereo Headphones, 10 Hz to 30 KHz Frequency Range, 32 Ohms Impedance

The Beyerdynamic DT-440 Stereo Headphones feature a circumaural, open-back design with an unusually extended frequency range, high output and patented earpads designed for long periods of enjoyment listening. These headphones are equally viable for use with home stereo systems, or portable audio players.