Astell & Kern T9iE Review: Ranked #743 of 865

Last updated: October 13, 2026

The Astell & Kern T9iE ranks #743 out of 865 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Astell & Kern

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Astell & Kern T9iE - ranked #743 of 865 In-Ear Headphones · Editor's rating 2.4/5

#743 Astell & Kern T9iE eBay

Pros: Its tuning has been measured by crinacle, so its sound can be compared directly with other measured models.

Cons: A Harman score of 54 places it in the lower part of the in-ear rankings.

ReleasedOct 2019 (7 years ago)
ConnectionWired
Deviation From Target3.32 dB standard deviation
Driver TypeDynamic
Form FactorIn-ear
Frequency Response8Hz - 48kHz
Harman Preference Score54 (measured by crinacle, via AutoEQ)
Impedance16 ohms
Tonal Tilt-1.03 (negative is warmer, positive brighter)
EQ preset to match the Harman target

Set a preamp of -6.0 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-3.1 dB0.70
Peak233 Hz-3.5 dB0.42
Peak2,848 Hz+6.9 dB0.76
Peak68 Hz+3.7 dB0.75
Peak1,530 Hz-3.9 dB1.23
High shelf10,000 Hz+6.0 dB0.70
Peak5,108 Hz-3.4 dB5.43
Peak9,218 Hz+1.5 dB5.88
Peak3,433 Hz+0.2 dB4.03
Peak3,805 Hz+0.8 dB5.99

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