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Audiobot Notes
Peak SPL

112.6 dB

This was approximated from the source output at 32 Ω

Damping factor
HiFiMAN HE-400s
HiFiMAN HE-400s
Impedance 22 Ω
Efficiency 98.0 dB SPL/mW
Frequency Response 20 - 35,000 Hz
Transducer Type Planar magnetic
Operating Principle Open
Ear Coupling Over-ear
Weight 350 g
Price History
updated 1 day ago
Current $184.75
Highest $299.00
Lowest $184.75
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HiFiMAN EF-2A
HiFiMAN EF-2A
Type Tube
Power Output 256 mW at 150 Ω
320 mW at 32 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $168.95
Highest $601.25
Lowest $168.95
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