Short answer: the TRN MT4. It ranks #770 of 1291 in-ear headphones by sound quality, rated 3.6/5, at $20.99; the KZ EDX Lite ranks #830, rated 3.5/5, at $18.99. The price gap is small enough that the sound-quality ranking should decide it.
Why pick the TRN MT4: A very cheap 10mm dynamic IEM that measures close to the Harman target, with full sub-bass to 20 Hz (score 68 across six measurements). Watch for: A 2.27 dB spread from the target still leaves some peaks and dips.
Why pick the KZ EDX Lite: A very cheap single dynamic driver earphone with a confident, fun tuning: sub-bass and bass both sit about 4 dB above target, so electronic and hip hop tracks hit with real rumble. The tradeoff: An 8.7 dB peak near 8.1 kHz adds sizzle and can make cymbals and S sounds sharp on bright recordings.
Buy the TRN MT4. It is rated higher for sound quality, and the $2 you would save on the KZ EDX Lite does not close the gap.
Want more options? Browse the full Headphones rankings.
A very cheap 10mm dynamic IEM that measures close to the Harman target, with full sub-bass to 20 Hz (score 68 across six measurements).
Amazon $20.99 eBay
A very cheap single dynamic driver earphone with a confident, fun tuning: sub-bass and bass both sit about 4 dB above target, so electronic and hip hop tracks hit with real rumble.
Amazon $18.99 eBayPrices 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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Specifications Side By Side
| TRN MT4 | KZ EDX Lite | |
|---|---|---|
| Price | $20.99 | $18.99 |
| Ranked | #770 of 1291 in In-Ear Headphones | #830 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm dynamic |
| Impedance | 22 ohms | 23 ohms |
| Sensitivity | 115 dB | 108 dB |
| Harman Preference Score | 68 (median of 6 squig.link measurements, calibrated to AutoEQ) | 67 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.27 dB standard deviation | 2.23 dB standard deviation |
| Tonal Tilt | -0.67 (negative is warmer, positive brighter) | -0.80 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+3.6 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 40kHz (Manufacturer specified) |
Frequency Response Compared
Both headphones’ measurements overlaid on the Harman target. Above the target sounds louder in that range, below it quieter. Each curve is the median of several independent measurements, shifted so its 500 Hz to 2 kHz average sits at 0 dB, so only the tuning is compared.
Measurement data: the TRN MT4 from hbb, hore, ianfann, pw, timmyv and tonedeafmonk; the KZ EDX Lite from ankramutt, audioamigo, eplv, kuping-sensi, obodio, suporsalad, tdl, therollo9 and yoshiultra, all via squig.link.
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