| Year | 2006 |
| General Type | In-Ear |
| Driver Type | Dynamic |
| Sensitivity (at 1 kHz) | 122 dB |
| Frequency Low | 50 Hz |
| Frequency High | 10000 Hz |
| Weight | 1.0 oz |
| Ear Bud / Cup Color | black, gray |
| Cable Color | black |
| Cord Type | Y |
| Connection | 1/8 inch |
| Adapter(s) | 1/4 inch |
| Wireless | No |
| Type | No |
| Battery Type | No |
| Active Noise Cancelling | No |
| Battery Type | No |
| On/Off Option | Unknown |
Shop for the Etymotic Research ER-4
Latest News
& Reviews
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03-Feb-2012
SMS Audio SYNC by 50 Over-ear Headphone Review
The SYNC by 50s aren’t inherently bad, they’re just terrible for $500. Read More...
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01-Feb-2012
Denon AH-D5000 Over-ear Headphone Review
The Denon AH-D5000s are a great, if pricy, pickup. Read More...
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