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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
Target SPL Requirements
Target Power Voltage
90.0 dB 0.0 mW 0.01 Vrms
92.5 dB 0.0 mW 0.01 Vrms
95.0 dB 0.0 mW 0.02 Vrms
97.5 dB 0.01 mW 0.02 Vrms
100.0 dB 0.01 mW 0.03 Vrms
102.5 dB 0.02 mW 0.04 Vrms
105.0 dB 0.03 mW 0.06 Vrms
107.5 dB 0.06 mW 0.07 Vrms
110.0 dB 0.1 mW 0.1 Vrms
Price History
Current $299.00
Highest $299.00
Lowest $197.00
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