A new audiophile versatility
The new HD 660 S permits you to enjoy sophisticated audiophile sound in even more listening situations. The successor of the legendary HD650 excels with the improved performance of its new transducer design. Thanks to its lower impedance, it delivers reference-class sound also when connected to hi-res mobile players, thus offering much greater versatility. The HD 660 S is an elegantly designed piece of high-quality engineering that indulges the demanding listener with aural precision and great wearing comfort.
Sound for the passionate music enthusiast
Made for the demanding listener, the HD 660 S surpasses the exceptional performance of its predecessor, the legendary HD650. With a crisp bass, excellent mid-frequency response, and a mild, pleasantly natural treble, the HD 660 S has an expressiveness that immerses you in each emotion and nuance of music. Still, it at all times stays exceptionally accurate and transparent.
Cutting-edge Sennheiser technology
The HD 660 S features a new transducer design developed by Sennheiser. This leads to improved keep an eye on 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 make sure that the highest impulse fidelity. The transducers are carefully selected and paired by hand to verify consistently narrow (±1 dB) tolerances.
The HD 660 S has been created to enjoy music in supreme quality and from numerous audio sources. Thanks to its low impedance it also offers reference-class fidelity with hi-res mobile players. Naturally, the HD 660 S reveals its full potential when it is attached 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
Reference-class open-back, dynamic headphone employing improved transducers delivering low harmonic distortion
Para-aramid reinforced, detachable cables employ high conductivity OFC copper to insure signal integrity with very low handling noise
Transducers are hand-selected for precise ( 1 dB) left / right matching tolerance insure ideal accuracy and presentation of stereo spatial characteristics
150-ohm nominal impedance allows direct connection to home and mobile hires audio devices
Supplied with two connection cables: One with a 6.35 mm stereo plug, the other a 4.4 mm Pentaconn balanced stereo plug, also included is a 6.35 mm to 3.5 mm adaptor
Frequency response is 10 – 41,000 Hz (-10 dB)