HD 600 Open BoxLightweight aluminum voice coils ensure excellent transient response Neodymium ferrous magnets maintain optimum sensitivity and excellent dynamics Sophisticated design, elegantly finished in black and gray High quality open metal mesh earpiece covers Detachable, Kevlar reinforced oxygen free copper cable with very low handling noise Connectivity technology : Wired Note: The unit ships with 1 (6. 3 mm) headphone adapter plug

reference-grade audiophile listening experience in a closed headphone

Maximum audio resolution with Sennheiser Signature Sound: Enjoy premium music quality all-day long thanks to the headphone's audiophile-inspired 42mm transducer system and aptX Adaptive

At home while listening to a podcast or on the go with your favorite song

and luxurious velour ear cushions makes these cans look and feel as good as they sound

An audiophile’s dream: Larger-than-life sound from 7mm TrueResponse transducers

• Secure

Long battery life: Up to 20 hours playback from the rechargeable AAA batteries

The Sennheiser HD 505 Copper Edition delivers fidelity that reveals even the smallest details

Sound Personalization: A test developed by Sennheiser and leading researchers at the Fraunhofer Institute to create a profile matched to individual hearing to provide an optimal listening experience

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

Exceptional comfort and long battery life: Lightweight

Specially developed membrane foil provides minimized natural resonances and distortion