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Audiobot Notes
Peak SPL

112.1 dB

This was approximated from the source output at 32 Ω

Damping factor 144.2
Sennheiser HD 660 S
Sennheiser HD 660 S
Impedance 150 Ω
Efficiency 95.8 dB SPL/mW
Frequency Response 10 - 41,000 Hz
Transducer Type Dynamic
Operating Principle Open
Ear Coupling Over-ear
Weight 260 g
Price History
Current $449.99
Highest $700.00
Lowest $449.99
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Output Impedance 1.04 Ω
Power Output 200 mW at 32 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $71.30
Highest $186.44
Lowest $71.30
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