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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
Target SPL Requirements
Target Power Voltage
90.0 dB 0.01 mW 0.03 Vrms
92.5 dB 0.03 mW 0.04 Vrms
95.0 dB 0.04 mW 0.06 Vrms
97.5 dB 0.08 mW 0.07 Vrms
100.0 dB 0.14 mW 0.1 Vrms
102.5 dB 0.25 mW 0.13 Vrms
105.0 dB 0.45 mW 0.18 Vrms
107.5 dB 0.79 mW 0.24 Vrms
110.0 dB 1.4 mW 0.31 Vrms
Price History
Current $229.99
Highest $438.59
Lowest $229.99
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Popular amps for Sennheiser HD 25-1 II

Model Peak SPL Portable Price
Electric Avenues PA2V2 Electric Avenues PA2V2 128.1 dB $70.00
FiiO E11K / A3 FiiO E11K / A3 129.4 dB $59.99
FiiO Andes E07K FiiO Andes E07K 128.5 dB $8,876.70
Schiit Fulla 2 Schiit Fulla 2 130.7 dB $99.00
Schiit Fulla Schiit Fulla 130.5 dB $59.00
FiiO Alpen E17 FiiO Alpen E17 128.5 dB $149.99
FiiO Mont Blanc E12 FiiO Mont Blanc E12 134.5 dB $260.00