Sennheiser HD 660 S Hi-Res Audiophile Open Back Dynamic Headphone (508231)

Made for the demanding listener, the HD 660 S surpasses the exceptional performance of its predecessor, the legendary HD 650. With a crisp bass, excellent mid-frequency response, and a gentle, pleasantly natural treble, the HD 660 S has an expressiveness that immerses you in every emotion and nuance of music. Still, it always stays exceptionally accurate and transparent. The HD 660 S features a new transducer design developed by Sennheiser. This results in improved control of the diaphragm movements thanks to a specially manufactured precision stainless steel fabric, which is adapted to the contour of the diaphragm. Extremely light aluminum voice coils ensure the highest impulse fidelity. The transducers are carefully selected and paired by hand to ensure consistently narrow (±1 dB) tolerances. Everything about the HD 660 S makes listening a pure pleasure – not least its strong yet lightweight open construction. The elliptical ear cups are shaped to follow the anatomy of the ear, while thick padding on the headband and the replaceable ear cushions guarantee hours and hours of listening in supreme comfort.

Specifications
Frequency Range: 10 – 41,000 Hz (-10 dB)
Impedance: 150
Sound Pressure Level (SPL): 104 dB at 1V 1kHz
THD, Total Harmonic Distortion: < 0,04% (1 kHz, 100 dB)
Transducer Principle: Dynamic, open
Ear Coupling: Over-ear (circumaural)
Connector: 6.35 mm / 4.4 mm Pentaconn

Includes
Sennheiser HD 660 S Open-Back Dynamic Headphones
Sennheiser Cable with 1/4" (6.35 mm) Plug
Sennheiser Cable with 0.17" (4.4 mm) Pentaconn Plug, Balanced
Sennheiser 1/4" to 1/8" Adapter
Sennheiser Storage Box
Sennheiser 2 Year Warranty