The E-A-RLINK™ 3A is a 1/2 inch height Standard/ Adult size (13.7mm) diameter yellow foam disposable/ single-use ear tip with black tube for use with the E-A-RTONE™ 3A and 5A Insert Earphone.
By directly coupling to the test subject's ear canal, via disposable foam E-A-RLINK™ ear tips, the E-A-RTONE™ 3A and 5A Insert Earphone for audiometric testing provide both performance and reliability advantages over traditional supra-aural earphones. Benefits (in comparison to supra-aural/TDH style earphones) include:
Infant Eartips are designed to be used as an alternative for the foam (E A RLINK™ ) eartips connected to the E A RTONE™ Insert Earphone in instances where the smallest (3B) foam tip size is too large for the test subject's ear canal.
3M™ E A RLINK™ Foam Eartips 3A 420 2004, with Black Tube, Adult Size, YellowFor use with E A RTONE™ 3A and 5A Insert Earphone Audiometric Testing.
3M™ E A RLINK™