Sennheiser HD 660S2 User Manual

Model: HD 660S2
High-definition open-back headphones
HD 660S2
Sonova Consumer Hearing GmbH
Am Labor 1, 30900 Wedemark, Germany, www.sennheiser-hearing.com Publ. 11/22, 596613/A01
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Sennheiser HD 660S2 Specifications

General

Frequency Response	8 Hz - 41, 500 Hz
Impedance	300 ohms
Weight	260 g (without cable)
Cable Length	1.8 m
Ear Coupling	Over-ear
Sound Pressure Level (SPL)	104 dB
Total Harmonic Distortion (THD)	< 0.04% (1 kHz, 100 dB SPL)
Transducer Principle	Dynamic
Connector	6.3 mm
Type	Open-back