Sennheiser HD 660S HiRes Audiophile Open Back Headphones (Black)

The perfect blend of power and control, the HD 660S is a powerhouse open-back headphone with the versatility to connect you to the deepest corners of your music collection.

A Direct Connection To Your Music
Known for their engaging signatures and liquid-smooth response, HD 660S predecessors HD 650 and HD 600 shattered performance barriers in the audiophile headphone category. The HD 660S transcends the best of that storied DNA with supernatural speed and effortless instrument reproduction—even at the bookends of the frequency spectrum. Utilizing an all-new transducer and specially ventilated drive unit, the HD 660S delivers the revealing, tack-sharp detail audiophiles demand without sacrificing the engaging dynamics that make music so enjoyable.

FEATURES

• Exceptional Sound with d
  etailed and dynamic, with extended and balanced frequency response
  Advanced Transducers producing exceptional transient response and improved control of diaphragm movement reducing distortion
  Versatile Connectivity – The HD 660 S is supplied with two para-aramid reinforced detachable cables (a 6.35mm stereo plug, a 3.5mm adaptor, and another one with the new 4.4 mm Pentaconn balanced stereo plug)
  Supreme Comfort
  
• Advanced Transducers producing exceptional transient response and improved control of diaphragm movement reducing distortion
• Versatile Connectivity – The HD 660 S is supplied with two para-aramid reinforced detachable cables (a 6.35mm stereo plug, a 3.5mm adaptor, and another one with the new 4.4 mm Pentaconn balanced stereo plug)
• Supreme Comfort

TECHNICAL SPECS

• Wearing style:  Headband
• Color:  matte black
• Frequency response (Headphones):  9 – 41,500 Hz
• Sound pressure level (SPL):  104 dB
• THD, total harmonic distortion:  < 0,04%
• Contact pressure:  6.0 N ± 1 N
• Ear coupling:  circumaural
• Connector:  6.35 mm / 4.4 mm Pentaconn
• Cable length:  3 m
• Transducer principle:  Dynamic, open
• Nominal impedance:  150 Ω
• Weight w/o cable:  260 g