The TRI x HBB Kai ranks #839 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.

Brand: TRI

Prices on this page were last checked October 16, 2026 at 5:46 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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TRI x HBB Kai - ranked #839 of 1253 In-Ear Headphones · Editor's rating 3.5/5

#839 TRI x HBB Kai: $79 Discontinued eBay

Pros: A broadly balanced tuning with a preference score of 67 against the Harman target.

Cons: Treble about 5 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.3 dB standard deviation from target. Discontinued.

Is the TRI x HBB Kai right for you?

Buy it if

you are sensitive to bright or sharp treble (treble sits 4.8 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 16 points.

Skip it if

you want to buy it new: it is discontinued.

Back	Closed
Connection	Wired (3.5mm)
Deviation From Target	2.32 dB standard deviation
Driver Type	Dynamic
Drivers	1 Dynamic (9.8mm DLC)
Form Factor	In-ear
Harman Preference Score	67 (median of 3 squig.link measurements, calibrated to AutoEQ)
Sub-bass Extension	Within 6 dB of target down to 20 Hz (-0.3 dB at 30 Hz)
Tonal Tilt	-0.77 (negative is warmer, positive brighter)

EQ Presets

Target sound

Harman target

Set a preamp of -5.9 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: 83 out of 100, up from 67.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+0.4 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	1,586 Hz	-2.2 dB	3.30
Peak	4,708 Hz	+5.8 dB	1.12

Neutral target

Set a preamp of -5.9 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: 84 out of 100, up from 32.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-8.1 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	1,587 Hz	-2.2 dB	3.31
Peak	4,708 Hz	+5.8 dB	1.12

Studio flat target

Set a preamp of -6.4 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: 87 out of 100, up from 13.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-10.7 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	166 Hz	-3.5 dB	0.78
Peak	669 Hz	+1.1 dB	2.79
Peak	1,591 Hz	-2.5 dB	2.94
Peak	2,569 Hz	+1.5 dB	6.00
Peak	3,354 Hz	+6.0 dB	1.13
Peak	5,747 Hz	+4.2 dB	6.00

Warm 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 Warm match with this EQ: 87 out of 100, up from 79.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+0.6 dB	0.70
High shelf	10,000 Hz	+1.5 dB	0.70
Peak	1,639 Hz	-2.4 dB	3.53
Peak	5,016 Hz	+4.2 dB	1.28

Bass target

Set a preamp of -5.9 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: 86 out of 100, up from 72.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+4.2 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	1,586 Hz	-2.2 dB	3.29
Peak	4,708 Hz	+5.8 dB	1.12

Bright target

Set a preamp of -6.4 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: 78 out of 100, up from 19.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	-8.2 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	132 Hz	-1.8 dB	0.78
Peak	660 Hz	+1.1 dB	2.08
Peak	1,634 Hz	-2.6 dB	2.49
Peak	3,807 Hz	+6.0 dB	1.12
Peak	5,576 Hz	+3.1 dB	4.94

V-shaped target

Set a preamp of -6.3 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 V-shaped match with this EQ: 73 out of 100, up from 59.

Filter	Frequency	Gain	Q
Low shelf	105 Hz	+4.8 dB	0.70
High shelf	10,000 Hz	+2.0 dB	0.70
Peak	37 Hz	+0.9 dB	2.55
Peak	520 Hz	+1.2 dB	1.60
Peak	1,578 Hz	-2.7 dB	2.27
Peak	3,573 Hz	+6.0 dB	1.08
Peak	5,511 Hz	+3.4 dB	4.24

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Reviews, Comparisons and Sound Samples
- Frequency response measurements of the TRI x HBB Kai by 3 squig.link measurers

Frequency Response

How the TRI x HBB Kai 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.

TRI x HBB KaiHarman target

Measurement data: median of 3 measurements from the squig.link databases of arn, harpo and timmyv. Thanks to each of them for publishing their work.

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