Moondrop KXXX Review: Ranked #298 of 971

Last updated: October 14, 2026

The Moondrop KXXX ranks #298 out of 971 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: Moondrop

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Moondrop KXXX - ranked #298 of 971 In-Ear Headphones · Editor's rating 4.1/5

#298 Moondrop KXXX Discontinued eBay

Pros: A single dynamic driver that measures very well (Harman score 75) with a tight 1.95 dB spread from the target and bass right on target down to 20 Hz.

Cons: Discontinued, so it is mainly found used. Treble sits about 3.3 dB below target, so it can sound a little smooth and dark next to brighter IEMs.

BackClosed
ConnectionWired
Deviation From Target1.95 dB standard deviation
Driver TypeDynamic
Drivers1 x 10mm DLC dynamic
Form FactorIn-ear
Frequency Response10Hz - 80kHz
Harman Preference Score75 (measured by HypetheSonics, via AutoEQ)
Impedance32 ohms
Sub-bass ExtensionWithin 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz)
Tonal Tilt-0.54 (negative is warmer, positive brighter)
EQ preset to match the Harman target

Set a preamp of -5.5 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-0.2 dB0.70
Peak7,222 Hz+6.1 dB1.29
Peak167 Hz-2.3 dB0.95
Peak1,617 Hz-1.4 dB0.30
Peak701 Hz+2.1 dB1.19
High shelf10,000 Hz-2.9 dB0.70
Peak4,658 Hz-0.9 dB4.36
Peak6,137 Hz+1.4 dB4.93
Peak3,186 Hz+0.7 dB2.61
Peak4,285 Hz-0.4 dB3.28

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