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Audiobot Notes
Peak SPL

115.2 dB

This was approximated from the source output at 32 Ω

Damping factor 3.5
HiFiMAN HE-400i
HiFiMAN HE-400i
Impedance 35 Ω
Efficiency 93.0 dB SPL/mW
Frequency Response 20 - 35,000 Hz
Transducer Type Planar magnetic
Operating Principle Open
Ear Coupling Over-ear
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Current $179.00
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Cayin HA-2 Vacuum Tube Amplifier
Type Tube
Output Impedance 10.0 Ω
Power Output 115 mW at 600 Ω
180 mW at 32 Ω
Frequency Range 15 - 40,000 Hz
Portable
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