50 ohm
Incorporates “touch-proof” electrical connection for safety
Duplicates ER•3A smooth frequency response
Provides 30+ dB external noise exclusion – equivalent to a single-wall booth when used with deeply-sealed foam eartips
Provides 70+ dB isolation (interaural attenuation) between ears; reduces the need for masking
Reduces test/retest variability compared to supra-aural earphones
Eliminates test errors due to collapsed ear canals
Simplifies RECD (Real-Ear-to-Coupler-Difference) measurements
May be calibrated in a 2-cc coupler, occluded ear simulator, or 0.4-cc coupler
Uses E-A-RLink insert eartips
Also available in 10 ohm
Check out alternative Insert Earphone option, item #OT-02-500
NOTE: This is a special order item and may incur additional lead time
