Etymotic ER4PT Headphones
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Also known as: Etymotic
Etymotic ER4PT Earphones
ER•4PT High-Fidelity noise-isolating earphones for use with portable audio players, tablets and computers. With air travel accesso
Etymotic invented noise-isolating, in-ear earphones. Etymotic’s original insert earphone design, developed for auditory research and medical diagnostics, used balanced armature receivers and established these speakers as the gold standard for high-definition, in-ear earphones. ER•4PT earphones, intended for sound engineers and audiophiles in constant motion, comes equipped with extra accessories and adapters.
Frequency Response 20 Hz – 16 kHz
Accuracy Score 4B (92%) 4S (92%) 4PT (86%)
Transducers balanced armature
Noise Isolation 35-42 dB
1kHz) 4B (100 Ohms) 4S (100 Ohms) 4PT (27 Ohms)
Sensitivity (1 kHz) SPL at 0.1v 4B (90 dB) 4S (90 dB) 4PT (102 dB)
Maximum Output (SPL) 122 dB
User Replaceable ACCU-Filters Yes
Warranty 2 years
Custom-Fit Option Yes
from House of Fraser to Tesco,
no one is selling it, we're sorry to say,
not 424 retailers nor anyone on eBay,
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