Dan Clark Audio Aeon X Closed Review: Ranked #98 of 382

Last updated: October 13, 2026

The Dan Clark Audio Aeon X Closed ranks #98 out of 382 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Dan Clark Audio

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Dan Clark Audio Aeon X Closed - ranked #98 of 382 Over-Ear Headphones · Editor's rating 4/5

#98 Dan Clark Audio Aeon X Closed Discontinued eBay

Pros: Measured response gives it an excellent Harman preference score of 82 with a 1.74 dB spread. Bass sits close to target and holds down to 20 Hz, so low end sounds full without bloat.

Cons: Discontinued, so it is mainly found used. Its 1.74 dB spread is less even than the best measured sets.

Released2021 (5 years ago)
BackClosed
ConnectionWired
Deviation From Target1.74 dB standard deviation
Driver TypePlanar magnetic
Form FactorOver-ear
Frequency Response20Hz - 20kHz
Harman Preference Score82 (measured by oratory1990, via AutoEQ)
Impedance12.5 ohms
Sensitivity91 dB/mW
Sub-bass ExtensionWithin 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz)
Tonal Tilt-0.71 (negative is warmer, positive brighter)
Weight0.7 lbs (326 g)
EQ preset to match the Harman target

Set a preamp of -4.4 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+0.7 dB0.70
Peak2,131 Hz+4.4 dB2.58
Peak315 Hz-1.8 dB0.92
Peak107 Hz-2.8 dB1.02
Peak182 Hz+1.5 dB2.51
High shelf10,000 Hz-6.6 dB0.70
Peak9,485 Hz+3.9 dB2.07
Peak5,604 Hz-3.0 dB5.93
Peak1,069 Hz+1.1 dB4.51
Peak6,720 Hz+2.1 dB5.89

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