The iBasso 3T-154 ranks #682 out of 1253 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: iBasso
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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#682 iBasso 3T-154: $149 Discontinued eBay
Pros: A broadly balanced tuning with a preference score of 69 against the Harman target.
Cons: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones. An uneven response, 2.6 dB standard deviation from target. Discontinued.
Is the iBasso 3T-154 right for you?
Buy it if
- you are sensitive to bright or sharp treble (treble sits 4.2 dB below target).
- you are happy to use EQ: our preset lifts its Harman match by about 16 points.
Skip it if
- you want more bass (about 3 dB below target).
- you want to buy it new: it is discontinued.
| Back | Closed |
|---|---|
| Connection | Wired (3.5mm) |
| Deviation From Target | 2.60 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 Dynamic (15.4mm beryllium-plated) |
| Form Factor | In-ear |
| Harman Preference Score | 69 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-4.0 dB at 30 Hz) |
| Tonal Tilt | +0.02 (negative is warmer, positive brighter) |
EQ Presets
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 Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 85 out of 100, up from 69.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 174 Hz | -2.3 dB | 0.97 |
| Peak | 688 Hz | +1.5 dB | 2.02 |
| Peak | 1,957 Hz | -3.6 dB | 2.88 |
| Peak | 2,907 Hz | +1.6 dB | 6.00 |
| Peak | 3,338 Hz | +4.1 dB | 6.00 |
| Peak | 5,345 Hz | +3.1 dB | 0.83 |
Neutral 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 Speaker Ranking from the median of 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 87 out of 100, up from 50.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.7 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 174 Hz | -2.4 dB | 0.85 |
| Peak | 684 Hz | +1.6 dB | 1.85 |
| Peak | 1,957 Hz | -3.6 dB | 2.88 |
| Peak | 2,907 Hz | +1.7 dB | 6.00 |
| Peak | 3,337 Hz | +4.1 dB | 6.00 |
| Peak | 5,345 Hz | +3.1 dB | 0.83 |
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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 82 out of 100, up from 32.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -7.3 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 172 Hz | -4.3 dB | 0.84 |
| Peak | 688 Hz | +1.4 dB | 2.34 |
| Peak | 1,880 Hz | -2.5 dB | 3.87 |
| Peak | 2,772 Hz | +1.9 dB | 6.00 |
| Peak | 3,281 Hz | +6.0 dB | 2.48 |
| Peak | 6,022 Hz | +3.8 dB | 6.00 |
Warm target
Set a preamp of -4.7 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 90 out of 100, up from 71.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +4.0 dB | 0.70 |
| High shelf | 10,000 Hz | +1.4 dB | 0.70 |
| Peak | 174 Hz | -2.1 dB | 1.08 |
| Peak | 707 Hz | +1.8 dB | 1.86 |
| Peak | 1,973 Hz | -3.9 dB | 3.11 |
| Peak | 2,939 Hz | +1.7 dB | 6.00 |
| Peak | 3,408 Hz | +4.4 dB | 5.54 |
| Peak | 6,070 Hz | +4.0 dB | 6.00 |
Bass target
Set a preamp of -6.2 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 84 out of 100, up from 56.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +5.9 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 62 Hz | +1.0 dB | 2.61 |
| Peak | 201 Hz | -2.2 dB | 1.51 |
| Peak | 711 Hz | +1.4 dB | 2.20 |
| Peak | 1,957 Hz | -3.6 dB | 2.88 |
| Peak | 2,908 Hz | +1.6 dB | 6.00 |
| Peak | 3,338 Hz | +4.1 dB | 6.00 |
| Peak | 5,345 Hz | +3.1 dB | 0.83 |
Bright 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 76 out of 100, up from 37.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -4.8 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 80 Hz | -0.9 dB | 2.32 |
| Peak | 174 Hz | -2.4 dB | 0.85 |
| Peak | 685 Hz | +1.5 dB | 1.92 |
| Peak | 1,959 Hz | -3.7 dB | 2.96 |
| Peak | 3,067 Hz | +2.2 dB | 6.00 |
| Peak | 3,807 Hz | +6.0 dB | 1.66 |
| Peak | 5,806 Hz | +4.3 dB | 6.00 |
V-shaped target
Set a preamp of -6.5 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 4 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 72 out of 100, up from 52.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +6.0 dB | 0.70 |
| High shelf | 10,000 Hz | +2.0 dB | 0.70 |
| Peak | 73 Hz | +1.2 dB | 2.50 |
| Peak | 612 Hz | +1.3 dB | 2.09 |
| Peak | 1,939 Hz | -3.5 dB | 2.69 |
| Peak | 2,991 Hz | +1.6 dB | 6.00 |
| Peak | 3,573 Hz | +6.0 dB | 1.58 |
| Peak | 5,742 Hz | +4.9 dB | 5.74 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the iBasso 3T-154 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 4 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.
Measurement data: median of 4 measurements from the squig.link databases of aftersound, arn, soundcheck39 and tonedeafmonk. Thanks to each of them for publishing their work.