Sennheiser HD 660S Audiophile Headphones

A direct connection to your music

Features

• Hi-fidelity sound
• Open-back design
• 42mm transducersKnown 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.
• Luxurious comfort
• Detachable cable

Technical Specifications

• Impedance: 150 Ω
• Connector: 6.35 mm / 4.4 mm Pentaconn
• Frequency response: 10 – 41,000 Hz (-10 dB)
• Sound pressure level (SPL): 104 dB at 1V 1kHz
• Ear coupling: Over-ear (circumaural)
• THD + N, total harmonic distortion and noise: < 0.04% (1 kHz, 100 dB)
• Transducer principle: Dynamic, open
• Weight: Approx. 260 g (without cable)

What's in the box

• HD 660 S
• Cable with 6.35 mm plug
• Cable with 4.4 mm Pentaconn plug (balanced)
• 6.35 to 3.5 mm Adaptor
• Manual
• Storage box