The HD 660 S Open-Back Dynamic Headphones from Sennheiser are headphones for the passionate audiophile and are crafted for the most demanding listener. Built with a transducer design that delivers lower harmonic distortion, they provide a natural, lifelike audio experience and can be used to produce crisp bass, transparent mid-frequency response, and a natural treble when connected to high-res players or portable audio devices.
With an impedance of 150 Ohms and a frequency response of 10 Hz to 41 kHz, the HD 660 S headphones are equipped with a choice of cables that feature both balanced (4.4mm Pentaconn) and 1/4" connectors. A 1/4" to 1/8" adapter is also included. This allows you to enjoy reference-class, high-fidelity sound with stationary and mobile audio players alike.
|Transducer Principle||Dynamic, open|
|Frequency Response|| 10 Hz to 41 kHz (-10 dB) |
|Sound Pressure Level||104 dB @ 1 V 1 kHz|
|Total Harmonic Distortion (THD) + N||<0.04% (1 kHz, 100 dB)|
|Ear Coupling||Over-ear (circumaural)|
|Connector|| 1 x 1/4" (6.3 mm) TRS, gold-plated, unbalanced |
1 x 3-pin 0.17" (4.4 mm) balanced 5-pin
|Dimensions||Not specified by manufacturer|
|Weight||9.17 oz (260 g), approximate (without cable)|
|Package Weight||3.55 lb|
|Box Dimensions (LxWxH)||12.7 x 10.2 x 4.4"|