Short answer: a tie on sound quality. Both are rated 3.6/5 (#725 and #769 of 1291 in-ear headphones) at nearly the same price ($69.99 vs $72.99), so choose on features and fit.
Why pick the NF Audio NA3: A single dynamic IEM with a dual cavity design. The catch: A 2.33 dB spread from the target shows peaks and dips that better tuned sets avoid.
The case for the TRN VX: A budget hybrid with one dynamic driver and six balanced armatures. The catch: Bass sits about 2.2 dB below target, so it sounds lean.
Buy the NF Audio NA3 or the TRN VX on features: they are rated the same for sound quality at close to the same price.
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A single dynamic IEM with a dual cavity design.
Shenzhenaudio $69.99 eBay
A budget hybrid with one dynamic driver and six balanced armatures.
Shenzhenaudio $72.99 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
| NF Audio NA3 | TRN VX | |
|---|---|---|
| Price | $69.99 | $72.99 |
| Ranked | #725 of 1291 in In-Ear Headphones | #769 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x dynamic (dual cavity) | 1 x 10mm dynamic + 6 x balanced armature |
| Impedance | 32 ohms | 22 ohms |
| Sensitivity | 105 dB | 107 dB/mW |
| Harman Preference Score | 69 (median of 3 squig.link measurements, calibrated to AutoEQ) | 68 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.33 dB standard deviation | 2.38 dB standard deviation |
| Tonal Tilt | -0.48 (negative is warmer, positive brighter) | +0.52 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.3 dB at 30 Hz) |
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 NF Audio NA3 from arn, ianfann, musicafe and vortexreviews; the TRN VX from bedrock, bryaudioreviews, eplv, melatonin, musicafe and pw, all via squig.link.
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