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Headphones
Research ER4 Extended Response
Etymotic
$24699
Research ER3 Extended Response
Etymotic
$9998
Wireless
No No
Has Mic
No No
Open
No No
Weight
51g28g
Part Number
ER4XRER3XR
Amazon
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Amazon
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Comparison Analysis

Comparing the Research ER4 Extended Response vs Research ER3 Extended Response reveals distinct differences in their targeted use cases.

The Research ER3 Extended Response is the more budget-friendly option, costing approximately $147 (147%) less than the Research ER4 Extended Response.