Mo-Fi Powered Hi-Fi Headphones with Built-in Amp

Mo-Fi is the first headphone that delivers real audiophile performance and sound quality on every device—from professional studio gear to laptops, tablets and even your phone. Oh, and we completely reimagined how it fits on your head, so you’ll get both optimal sound and listen-all-day comfort. Because trust us, you’ll want to.
Custom high-powered audiophile amplifier
50mm, fiber-reinforced dynamic driver
Sealed over-ear design for superior isolation and feedback prevention
User-adjustable tension and suspension adapt to any head shape 
and size for a perfect fit
Racecar-inspired multi-jointed headband design keeps earcups parallel 
at all times for superior comfort and sound
All-analog amplifier performance modes: passive, active and enhanced bass
Powers on and off automatically when headphones are opened and closed
Rechargeable battery provides up to 12 hours of playtime; Mo-Fi continues to play music even when battery has no charge
SPECIFICATIONS
AMPLIFIER
 Output power:240mW
 THD+N:0.004%
 Frequency response:15Hz-20kHz
 SNR, self noise:< 105 dB
 Noise:< 20 uV
 Battery capacity:1020mAh
DRIVERS
 Type and size:50mm, fiber-reinforced dynamic driver
 Impedance:42 ohms
 Frequency response:15Hz-20kHz
 Enclosure details:Sealed enclosure with tuned damping materials