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[AUDITORY] Experience with insert earphones



Dear list,

does anybody have experience with the  3M™ E-A-RTONE™ Insert Earphone 5A? 
How does it compare in quality and ease of use to the Etymotic or Radio Ear ones? 
Would you recommend the  3M™ E-A-RTONE™ Insert Earphone 5A for research purposes? 

Any thoughts?

Best
Stephan

Prof. Stephan Paul, 
Dr.-Eng. em Acústica e Vibrações
Laboratório de Vibrações e Acústica - LVA
Universidade Federal de Santa Catarina
Florianópolis, SC
Grupo de Vibrações e Acústica -UFSC