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)
