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Impedance 75 Ω
Efficiency 94.0 dB SPL/mW
Transducer Type Dynamic
Operating Principle Closed
Ear Coupling Over-ear
Target SPL Requirements
Target Power Voltage
90.0 dB 0.4 mW 0.17 Vrms
92.5 dB 0.71 mW 0.23 Vrms
95.0 dB 1.3 mW 0.31 Vrms
97.5 dB 2.2 mW 0.41 Vrms
100.0 dB 4.0 mW 0.55 Vrms
102.5 dB 7.1 mW 0.73 Vrms
105.0 dB 12.6 mW 0.97 Vrms
107.5 dB 22.4 mW 1.3 Vrms
110.0 dB 39.8 mW 1.73 Vrms
Price History
Current $213.32
Highest $249.00
Lowest $213.32
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Popular amps for Ultrasone HFI-700

Model Peak SPL Portable Price
Schiit Magni 122.2 dB $12.99
Schiit Magni 2 122.2 dB $5.99
Schiit Magni 3 123.4 dB $99.00
FiiO Mont Blanc E12 119.7 dB $260.00
Schiit Fulla 2 115.9 dB $99.00
Schiit Fulla 115.7 dB $59.00
SMSL SAP-2 Pro 120.3 dB $69.38