: Designed for people on the move.On a train, on a plane, from your computer system to your bed room, PSB headphones are light-weight and prepared to evacuate anywhere you want to go. Fold em up into the safety travel case and youll never ever be far from true hi-fi listening. We even included a thoughtful touch for your comfortdual input connections on either side of the headphones implies no more crossed wires. Just plug in the cable on the left or right and be within easy reach of a headphone jack no matter where its situated.All of the music. None of the noise.Sometimes you just desire it to be just you and your music in your very own individual area. The PSB M4U 2 Active Sound Cancelling Headphones don't let anything come in between you and enjoying your music. Thanks to PSBs exclusive Room FeelTM technology, your music will certainly sound so rich and natural youll think youre listening to a set of high-end loudspeakers.All of the music. Non-stop. The M4U 2 model features three practical modes of operation: Active Sound Cancellation (ANC), Active Mode, and Passive Mode (without batteries). Listen all day and all night with 60 hours of run time in ANC or Active modes. When you run out batteries, change to Passive Mode without missing out on a beat.Ergonomically sound.Listen longer in additional convenience. PSB's unique two-way adjustable ear pads are gyro-suspended for optimum ergonomics and supreme convenience.
Around-the-ear design with closed, padded ear cups and adjustable headband and folds up for easier storage and portability
Active noise-canceling technology reduces distracting external sounds
Active listening mode uses built-in headphone amplifier for more powerful and precise audio with portable sources; Tri-mode operation allows passive listening (without batteries), active listening mode, and active listening mode with noise cancellation
In-line remote/microphone for hands-free use with iPod, iPhone, and iPad
In-line push-to-hear monitor control pauses the audio source and noise-canceling feature for brief conversations without removing headphones