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Audiobot Notes
Peak SPL

138.5 dB

This was approximated from the source output at 32 Ω

Damping factor 333.3
Etymotic ER-4S
Etymotic ER-4S
Impedance 100 Ω
Efficiency 120.0 dB SPL/mW
Frequency Response 20 - 16,000 Hz
Transducer Type Balanced armature
Ear Coupling In-ear
Price History
Current $299.00
Highest $299.00
Lowest $197.00
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FiiO Andes E07K
FiiO Andes E07K
Output Impedance 0.3 Ω
Power Output 35 mW at 300 Ω
220 mW at 32 Ω
250 mW at 16 Ω
Frequency Range 20 - 20,000 Hz
Portable
Price History
Current $8,876.70
Highest $9,320.50
Lowest $8,876.70
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