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Audiobot Notes
Peak SPL

127.0 dB

This was approximated from the source output at 50 Ω

Damping factor 70.0
Sennheiser HD 25-1 II
Sennheiser HD 25-1 II
Impedance 70 Ω
Efficiency 108.5 dB SPL/mW
Frequency Response 16 - 22,000 Hz
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling On-ear
Weight 140 g
Price History
Current $249.95
Highest $438.59
Lowest $249.95
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Output Impedance 1.0 Ω
Power Output 15 mW at 600 Ω
50 mW at 300 Ω
100 mW at 50 Ω
200 mW at 32 Ω
Frequency Range 5 - 40,000 Hz
Portable
Price History
Current $399.00
Highest $399.00
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