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) Diffuse-field equalized |
Sound Pressure Level | 104 dB @ 1 V 1 kHz |
Impedance | 150 Ohms |
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) |
Packaging Info | |
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Package Weight | 3.55 lb |
Box Dimensions (LxWxH) | 12.7 x 10.2 x 4.4" |
Reviews Sennheiser HD 660 S Open-Back Dynamic Headphones (Import)