The KZ Linlong ranks #625 out of 1291 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: KZ

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KZ Linlong - ranked #625 of 1291 In-Ear Headphones · Editor's rating 3.8/5

Check price at KZ Audio ($15.00) →

#625 KZ Linlong: $15.00 KZ Audio $15.00 eBay

Pros: A broadly balanced tuning with a preference score of 71 against the Harman target.

Cons: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.0 dB standard deviation from target.

Is the KZ Linlong right for you?

Buy it if

your taste runs bass-heavy: it scores 81 for that sound.
you are sensitive to bright or sharp treble (treble sits 2.4 dB below target).
you want sub-bass rumble that reaches down to 20 Hz.
you are happy to use EQ: our preset lifts its Harman match by about 17 points.

Back	Closed
Connection	Wired
Deviation From Target	1.96 dB standard deviation
Driver Type	Dynamic
Drivers	1 x 6mm micro dynamic driver (XUN-6)
Form Factor	In-ear
Frequency Response	20Hz - 40kHz
Harman Preference Score	71 (median of 3 squig.link measurements, calibrated to AutoEQ)
Impedance	25 ohms
Sensitivity	103 dB
Sub-bass Extension	Within 6 dB of target down to 20 Hz (+3.2 dB at 30 Hz)
Tonal Tilt	-0.87 (negative is warmer, positive brighter)
Weight	0 lbs (18 g)

EQ Presets

Target sound

Harman target

Set a preamp of -4.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 88 out of 100, up from 71.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-2.4 dB	0.70
High shelf	10,000 Hz	-0.6 dB	0.70
Peak	209 Hz	-1.8 dB	1.59
Peak	4,604 Hz	+4.1 dB	1.53

Neutral target

Set a preamp of -4.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 90 out of 100, up from 30.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-10.7 dB	0.70
High shelf	10,000 Hz	-0.6 dB	0.70
Peak	26 Hz	-1.6 dB	1.95
Peak	196 Hz	-1.6 dB	1.19
Peak	4,604 Hz	+4.1 dB	1.53

Studio flat target

Set a preamp of -4.3 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 84 out of 100, up from 11.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-11.7 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	171 Hz	-3.5 dB	0.72
Peak	703 Hz	+1.0 dB	2.63
Peak	1,470 Hz	-1.0 dB	3.52
Peak	3,573 Hz	+4.2 dB	1.43
Peak	6,472 Hz	+1.1 dB	4.38

Warm target

Set a preamp of -2.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 88 out of 100, up from 80.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-2.1 dB	0.70
High shelf	10,000 Hz	-4.1 dB	0.70
Peak	4,403 Hz	+2.2 dB	2.60

Bass target

Set a preamp of -4.2 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 89 out of 100, up from 81.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+1.4 dB	0.70
High shelf	10,000 Hz	-0.6 dB	0.70
Peak	212 Hz	-1.8 dB	1.68
Peak	4,604 Hz	+4.1 dB	1.53

Bright 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 Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 81 out of 100, up from 18.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-10.7 dB	0.70
High shelf	10,000 Hz	+1.6 dB	0.70
Peak	4,703 Hz	+6.0 dB	1.41

V-shaped 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 Speaker Ranking from the median of 3 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 81 out of 100, up from 68.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+2.1 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	4,568 Hz	+6.0 dB	1.29

Check current price at KZ Audio ($15.00) →Search eBay for KZ Linlong →

Reviews, Comparisons and Sound Samples
- Frequency response measurements of the KZ Linlong by 3 squig.link measurers

Frequency Response

How the KZ Linlong measures across the audible range, against the Harman in-ear target that most listeners prefer in blind tests. Where the line sits above the target that range sounds louder (more bass, brighter treble), below it quieter. The curve is the median of 3 independent measurements, so one odd sample or rig cannot skew it, and both lines are shifted so their 500 Hz to 2 kHz average sits at 0 dB.

KZ LinlongHarman target

Measurement data: median of 3 measurements from the squig.link databases of aftersound, ianfann and tonedeafmonk. Thanks to each of them for publishing their work.

More KZ headphones →

KZ Linlong Review: Ranked #625 of 1291