Etymotic ER4B Review: Ranked #661 of 668

Last updated: October 13, 2026

The Etymotic ER4B ranks #661 out of 668 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Etymotic

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Etymotic ER4B - ranked #661 of 668 In-Ear Headphones · Editor's rating 1/5

#661 Etymotic ER4B Discontinued eBay

Pros: It uses 1 x balanced armature.

Cons: Discontinued, so it is mainly found used. A tonal tilt of +2.22 makes it sound bright and thin. Its 5.06 dB spread from the target means a noticeably uneven response. A Harman score of 32 places it in the lower part of the in-ear rankings.

Released1991 (35 years ago)
ConnectionWired
Deviation From Target5.06 dB standard deviation
Driver TypeBalanced armature
Drivers1 x balanced armature
Form FactorIn-ear
Frequency Response20Hz - 16kHz
Harman Preference Score32 (measured by crinacle, via AutoEQ)
Impedance100 ohms
Sensitivity100 dB/mW
Tonal Tilt+2.22 (negative is warmer, positive brighter)
EQ preset to match the Harman target

Set a preamp of -6.1 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.

FilterFrequencyGainQ
Low shelf105 Hz+5.8 dB0.70
Peak2,028 Hz-5.7 dB0.77
Peak107 Hz+2.2 dB0.97
Peak826 Hz+2.9 dB0.92
Peak6,393 Hz+4.3 dB2.71
High shelf10,000 Hz-0.2 dB0.70
Peak3,504 Hz+0.6 dB4.06
Peak2,596 Hz-0.8 dB4.41
Peak1,883 Hz+0.7 dB4.13
Peak1,371 Hz-0.5 dB3.97

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