HD 660 S
https://en-us.sennheiser.com/headphones-audiophile-high-end-hd-660-s
- Impedance: 150 Ω
- Connector: Stereo jack plug, gold-plated 6.35 mm, unbalanced, 3-pin 4.4 mm, balanced, 5-pin
- Frequency response: 10 – 41,000 Hz (-10 dB)
- Sound pressure level (SPL): 104 dB at 1V 1kHz
- Ear coupling: Over-ear (circumaural)
- THD + N, total harmonic distortion and noise: < 0,04% (1 kHz, 100 dB)
- Transducer principle (headphones): Dynamic, open
- Weight w/o cable: Approx. 260 g (without cable)