The TRN MT4 ranks #616 out of 1061 total In-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: TRN
Prices on this page were last checked October 15, 2026 at 5:41 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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#616 TRN MT4: $20.99 Amazon $20.99 eBay
Pros: A very cheap dynamic IEM. Measurements show full sub-bass to 20 Hz (score 68 across six measurements).
Cons: A 2.27 dB spread from the target still leaves some peaks and dips.
Is the TRN MT4 right for you?
Buy it if
- 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 18 points.
Skip it if
- you want the best value: the higher-rated TRN MT5 costs about $6 less.
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 2.27 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Harman Preference Score | 68 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 22 ohms |
| Sensitivity | 115 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) |
| Tonal Tilt | -0.67 (negative is warmer, positive brighter) |
EQ Presets
Harman target
Set a preamp of -5.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Harman match with this EQ: 86 out of 100, up from 68.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.9 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 34 Hz | +0.7 dB | 1.28 |
| Peak | 182 Hz | -4.2 dB | 0.78 |
| Peak | 851 Hz | +1.1 dB | 2.31 |
| Peak | 2,179 Hz | -1.4 dB | 4.58 |
| Peak | 3,326 Hz | +3.0 dB | 4.79 |
| Peak | 4,624 Hz | -2.3 dB | 6.00 |
| Peak | 5,919 Hz | +6.0 dB | 5.61 |
| Peak | 7,316 Hz | +1.5 dB | 6.00 |
Neutral target
Set a preamp of -5.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Neutral match with this EQ: 88 out of 100, up from 34.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.4 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 174 Hz | -4.1 dB | 0.68 |
| Peak | 851 Hz | +1.1 dB | 2.13 |
| Peak | 2,184 Hz | -1.4 dB | 4.68 |
| Peak | 3,325 Hz | +3.0 dB | 4.76 |
| Peak | 4,624 Hz | -2.2 dB | 6.00 |
| Peak | 5,919 Hz | +6.0 dB | 5.60 |
| Peak | 7,317 Hz | +1.5 dB | 6.00 |
Studio flat target
Set a preamp of -4.9 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Studio flat match with this EQ: 87 out of 100, up from 14.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -11.8 dB | 0.70 |
| High shelf | 10,000 Hz | +1.6 dB | 0.70 |
| Peak | 179 Hz | -6.0 dB | 0.72 |
| Peak | 890 Hz | +1.1 dB | 2.10 |
| Peak | 3,047 Hz | +4.8 dB | 3.93 |
| Peak | 3,562 Hz | +1.4 dB | 6.00 |
| Peak | 4,611 Hz | -4.2 dB | 6.00 |
| Peak | 5,992 Hz | +4.5 dB | 6.00 |
| Peak | 7,450 Hz | +1.3 dB | 6.00 |
Warm target
Set a preamp of -3.1 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Warm match with this EQ: 90 out of 100, up from 78.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -0.7 dB | 0.70 |
| High shelf | 10,000 Hz | -6.0 dB | 0.70 |
| Peak | 179 Hz | -4.0 dB | 0.81 |
| Peak | 851 Hz | +1.3 dB | 2.41 |
| Peak | 2,159 Hz | -2.2 dB | 4.26 |
| Peak | 3,303 Hz | +1.7 dB | 5.46 |
| Peak | 4,564 Hz | -4.7 dB | 6.00 |
| Peak | 6,093 Hz | +4.0 dB | 6.00 |
Bass target
Set a preamp of -5.7 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bass match with this EQ: 88 out of 100, up from 71.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +2.9 dB | 0.70 |
| High shelf | 10,000 Hz | -3.1 dB | 0.70 |
| Peak | 32 Hz | +0.9 dB | 1.12 |
| Peak | 185 Hz | -4.2 dB | 0.81 |
| Peak | 851 Hz | +1.1 dB | 2.35 |
| Peak | 2,178 Hz | -1.4 dB | 4.54 |
| Peak | 3,326 Hz | +3.0 dB | 4.80 |
| Peak | 4,623 Hz | -2.3 dB | 6.00 |
| Peak | 5,919 Hz | +6.0 dB | 5.61 |
| Peak | 7,315 Hz | +1.5 dB | 6.00 |
Bright 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted Bright match with this EQ: 81 out of 100, up from 22.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -9.5 dB | 0.70 |
| High shelf | 10,000 Hz | +0.3 dB | 0.70 |
| Peak | 174 Hz | -4.2 dB | 0.68 |
| Peak | 851 Hz | +1.1 dB | 2.31 |
| Peak | 2,147 Hz | -1.5 dB | 4.05 |
| Peak | 3,281 Hz | +2.9 dB | 6.00 |
| Peak | 5,568 Hz | +4.0 dB | 1.26 |
V-shaped 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 6 squig.link measurements, in the filter layout AutoEQ uses. Predicted V-shaped match with this EQ: 78 out of 100, up from 63.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +3.5 dB | 0.70 |
| High shelf | 10,000 Hz | +1.3 dB | 0.70 |
| Peak | 180 Hz | -2.8 dB | 0.84 |
| Peak | 2,073 Hz | -1.3 dB | 2.78 |
| Peak | 3,250 Hz | +2.4 dB | 6.00 |
| Peak | 5,091 Hz | +3.9 dB | 0.92 |
- Reviews, Comparisons and Sound Samples
Frequency Response
How the TRN MT4 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 6 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 6 measurements from the squig.link databases of hbb, hore, ianfann, pw, timmyv and tonedeafmonk. Thanks to each of them for publishing their work.