Short answer: a tie on sound quality. Both are rated 4.2/5 (#175 and #185 of 450 in-ear headphones), so choose on features and fit.
What the TANGZU Zetian Wu does well: A single 14.5 mm planar magnetic driver earns a preference score of 76 in crinacle’s measurement with a low 1.76 dB deviation. The tradeoff: Hobbyist measurements on squig.link show a 4.1 dB dip near 6.7 kHz that blunts snare snap and sibilance, followed by a 4.7 dB peak near 11.9 kHz that adds some airy sizzle.
Buy the EPZ P50 or the TANGZU Zetian Wu on features: they are rated the same for sound quality at close to the same price.
Still deciding? The full Headphones rankings cover every ranked option.
Specifications Side By Side
| EPZ P50 | TANGZU Zetian Wu | |
|---|---|---|
| Price | $189.99 | - |
| Ranked | #175 of 450 in In-Ear Headphones | #185 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 77 (median of 28 squig.link measurements, calibrated to AutoEQ) | 76 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 1.56 dB standard deviation | 1.76 dB standard deviation |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) | -0.66 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.6 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 2 balanced armature + 2 planar) | Planar magnetic |
| Drivers | 1 x 10mm dynamic + 2 x balanced armature + 2 x planar | 1 x 14.5mm planar magnetic |
| Impedance | 20 ohms | 16 ohms |
| Sensitivity | 106 dB | 100 dB |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 20Hz - 20kHz (Manufacturer specified) |
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Prices on this page were last checked October 11, 2026 at 4:59 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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The Two Headphones In Full
EPZ P50: $189.99 Amazon eBay
Full EPZ P50 review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.56 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 2 balanced armature + 2 planar) |
| Drivers | 1 x 10mm dynamic + 2 x balanced armature + 2 x planar |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 77 (median of 28 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 20 ohms |
| Sensitivity | 106 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Tonal Tilt | -0.34 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
TANGZU Zetian Wu AliExpress eBay
Pros: A single 14.5 mm planar magnetic driver earns a preference score of 76 in crinacle’s measurement with a low 1.76 dB deviation. Sub-bass and bass run about 1.5 dB above target, 1.6 dB over at 30 Hz, so it suits listeners who want a warm, full sound with real low-end depth. The midrange from 200 Hz to 3 kHz is essentially on target, keeping voices clear.
Cons: Hobbyist measurements on squig.link show a 4.1 dB dip near 6.7 kHz that blunts snare snap and sibilance, followed by a 4.7 dB peak near 11.9 kHz that adds some airy sizzle. It is wired only and lists no microphone.
Full TANGZU Zetian Wu review and specifications →
| Released | 2022 (4 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.76 dB standard deviation |
| Driver Type | Planar magnetic |
| Drivers | 1 x 14.5mm planar magnetic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| Harman Preference Score | 76 (measured by crinacle, via AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 100 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.6 dB at 30 Hz) |
| Tonal Tilt | -0.66 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -2.8 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | -2.0 dB | 0.70 |
| Peak | 8,716 Hz | +3.3 dB | 1.43 |
| Peak | 181 Hz | -2.0 dB | 1.43 |
| Peak | 810 Hz | +2.2 dB | 1.04 |
| Peak | 1,735 Hz | -1.5 dB | 1.21 |
| High shelf | 10,000 Hz | -2.8 dB | 0.70 |
| Peak | 65 Hz | +0.8 dB | 1.98 |
| Peak | 6,193 Hz | +1.9 dB | 5.87 |
| Peak | 4,753 Hz | -1.2 dB | 4.09 |
| Peak | 26 Hz | -1.0 dB | 3.20 |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons