Audio-Technica ATH-LS400 Review: Ranked #871 of 909

Last updated: October 13, 2026

The Audio-Technica ATH-LS400 ranks #871 out of 909 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Audio-Technica

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Audio-Technica ATH-LS400 - ranked #871 of 909 In-Ear Headphones · Editor's rating 1/5

#871 Audio-Technica ATH-LS400 Discontinued eBay

Pros: It uses 4 x balanced armature with an easy 20 ohm load.

Cons: Discontinued, so it is mainly found used. Its 4.89 dB spread from the target means a noticeably uneven response. A Harman score of 35 places it in the lower part of the in-ear rankings.

Released2017 (9 years ago)
ConnectionWired
Deviation From Target4.89 dB standard deviation
Driver TypeBalanced armature
Drivers4 x balanced armature
Form FactorIn-ear
Frequency Response15Hz - 20kHz
Harman Preference Score35 (measured by crinacle, via AutoEQ)
Impedance20 ohms
Sensitivity105 dB/mW
Tonal Tilt-1.25 (negative is warmer, positive brighter)
Weight0 lbs (12 g) (without cable)
EQ preset to match the Harman target

Set a preamp of -7.0 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+1.4 dB0.70
Peak7,608 Hz+6.3 dB0.57
Peak209 Hz-5.8 dB0.51
Peak1,672 Hz+1.6 dB2.73
Peak894 Hz+1.9 dB1.91
High shelf10,000 Hz+2.8 dB0.70
Peak3,912 Hz-2.8 dB5.10
Peak3,148 Hz+2.5 dB5.98
Peak4,869 Hz+1.6 dB5.73
Peak2,381 Hz-1.4 dB5.36

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