Klipsch M40 Active Noise Canceling Headphones

The Klipsch M40 active noise canceling headphones are designed to eliminate all the background and ambient noises, while you focus on the music. These headphones feature a pair of 40mm woofers that produce deep bass and dynamic mid-range, while an active crossover 15mm tweeter offers crisp, clean highs. The Klipsch M40 requires a single AAA battery to enables the active noise canceling mode. The battery provides enough juice for up to 45-hour. Other specs include a frequency response of 20Hz to 20kHz, an impedance of 32 Ohms, 2 detachable cables that fit any 3.5mm audio jack and a built-in microphone. The Klipsch M40 active noise-canceling headphones retails for $349.99. [Klipsch]