ER Reference Library
Hearing Aid Products
Personal Noise Dosimeters
Insert Earphones For Research
Flat frequency response referenced to the sound field
70+ dB isolation between ears: reduces the need for masking
Eliminates collapsed ear canal problem
30+ dB external noise exclusion
The ER1 was designed to imitate the normal resonance of the open ear, and is used for speech audiometry where the goal is to reproduce the same frequency response at the eardrum for speech as would be produced in the live situation.
Dual-mono 7' cable assembly
50 foam eartips (regular, 13 mm)
10 foam eartips (baby, 10 mm)
2 Single Use Eartips
adapters with tubing
4 front tube replacements
For $540 a pair
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