HD 660 S 2 Open BoxNatural, relaxed, high fidelity sound with extra sub bass: Ultra light aluminum voice coil with 300 ohm impedance for excellent impulse response and an intimate sound with great timbre Airflow optimised 42mm high performance transducers: Improved ventilation due to a uniquely powerful vented magnet system for minimal distortion and air displacement control through steel mesh damping Double the sound pressure at the lowest octaves: You can feel the

audiophile-grade sound with 150-ohm drivers made in

detailed sound across an extended frequency range of 12 Hz – 38

The open-back design and angled drivers create a wide soundstage that makes you feel like you're right where the action is

An intimate

• Ergonomic Acoustic Refinement (EAR) system

realistic tone and perfectly balanced acoustics

these subtle touches immediately give the HD 599 headphones a premium feel

3 mm adapter

and empowered

Extended low-end reach with gratifying presence for clear bass performance

a closed-back addition to our audiophile lineup

Utilizing an all-new transducer and specially ventilated drive unit