Sennheiser HD660S Headphones
With a crisp bass, excellent mid-frequency response, and a gentle, pleasantly natural treble, the HD 660S has an expressiveness that immerses you in every emotion and nuance of music. Still, it always stays exceptionally accurate and transparent.
The HD 660S 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.
The HD 660S has been created to enjoy music in supreme quality and from many different audio sources. Thanks to its low impedance it also offers reference-class fidelity with hi-res mobile players. Naturally, the HD 660S reveals its full potential when it is connected to the balanced outputs of a dedicated headphone amplifier such as the HDV 820 or to the balanced output of a mobile digital audio player. Accordingly, it comes with a choice of cables for just about any occasion. All cables are made of highly conductive OFC copper, featuring very low handling noise and sturdy para-aramid reinforcement.
Everything about the HD 660S 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.
The pure and effortless sound of the HD 660S is reflected in its new matte black and anthracite design. It is a high-end aesthetic that embraces both timeless elegance and contemporary style – uncompromising in its craftsmanship, like everything about the HD 660S.
Impedance 150 O
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 (headphones) Dynamic, open
Weight Approx. 260 g (without cable)