3M E-A-RTONE Insert Earphone 3A
The E-A-RTone 3A Insert Earphone is an audiometric transducer designed to be connected to an audiometer for the purpose of testing hearing. The device provides significant clinical and practical advantages over the supra-aural style earphone.
By directly coupling to the test subject's ear canal, via disposable foam E-A-RLink eartips, the E-A-RTone 3A Insert Earphone for audiometric testing provides both performance and reliability advantages over traditional supra-aural earphones.
Benefits (in comparison to supra-aural/TDH-style earphones) include
- Improved ambient noise attenuation
- Greater interaural attenuation
- Facilitated infection control (via disposable ear tips)
- Elimination of collapsed canal artifact
- Better Test/Retest Reliability
- Reduced Occlusion Effect for BC testing.
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Ships FREE today
All in-stock orders placed before 5pm EST (Mon-Fri) will ship the same day. Ground shipping is FREE within the 48 contiguous United States for all orders over $9.95. Expedited shipping options, as well as ground shipping to Alaska, Hawaii, or Puerto Rico are available for an extra charge.
Returns & Exchanges
Qualifying products may be returned within 30 days from receipt for a full refund. Please note that hearing aid accessories, hygine items and ear care products cannot be returned. Please CLICK HERE to review our full returns policy.