Sennheiser HD 660S2 - High-definition Headphones Manual
Contents

Connecting the headphones

*optional available
Putting on the headphones and using them

Changing the connection cable

Replacing the ear pads

Cleaning and storing the headphones

Package contents

Specifications
| Transducer principle | dynamic |
| Frequency response | to 41,500 Hz (–10 dB) |
| Frequency characteristic | diffuse field equalized |
| Ear coupling | circum-aural, open |
| Contact pressure | approx. 6.0 N ± 1.0 N |
| Nominal impedance | Ω |
| Sound pressure level at 1 kHz | dB at 1 Vrms |
| Long-term input power | max. 500 mW as per EN 60-268-7 |
| THD | ≤ 0.04% (1 kHz, 100 dB) |
| Cable | oxygen-free copper cable (OFC), 1,8 m |
| Connector (see pin assignment) | stereo jack plug, gold-plated 1/4" (6.35 mm), unbalanced, 3-pin 4.4 mm, balanced, 5-pin |
| Weight | approx. 260 g (without cable) |
| Maximum value of the static magnetic field at the surface | 4.5 mT |
| Operating temperature | –10°C to +55°C |
| Pin assignment | ![]() |
Sonova Consumer Hearing GmbH
Am Labor 1, 30900 Wedemark, Germany, www.sennheiser-hearing.com

References
Download manual
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Download Sennheiser HD 660S2 - High-definition Headphones Manual
