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Audiobot Notes
Peak SPL

121.0 dB

This was approximated from the source output at 50 Ω

Damping factor 75.0
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 $475.69
Highest $700.00
Lowest $475.69
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Output Impedance 2.0 Ω
Power Output 190 mW at 600 Ω
380 mW at 300 Ω
1,000 mW at 50 Ω
1,000 mW at 32 Ω
Frequency Range 20 - 20,000 Hz
Portable
Additional Notes
"Class A single ended headphone amp and preamp"
Price History
Current $9.15
Highest $1,212.29
Lowest $9.15
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