Short answer: a tie on sound quality. Both are rated 4.2/5 (#203 and #197 of 450 in-ear headphones) at nearly the same price ($18.99 vs $19.99), so choose on features and fit.
Buy the KZ Taurus or the Tanchjim Zero Ultima 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
| KZ Taurus | Tanchjim Zero Ultima | |
|---|---|---|
| Price | $18.99 | $19.99 |
| Ranked | #203 of 450 in In-Ear Headphones | #197 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 76 (median of 9 squig.link measurements, calibrated to AutoEQ) | 76 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.60 dB standard deviation | 1.95 dB standard deviation |
| Tonal Tilt | +0.69 (negative is warmer, positive brighter) | +0.03 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-3.6 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 2 x dynamic | 1 x dynamic |
| Impedance | 36 ohms | 30 ohms |
| Sensitivity | 105 dB/mW | 123 dB/V |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 10Hz - 48kHz (Manufacturer specified) |
| Weight | - | 0 lbs (2.3 g) per earbud |
| Built-in Microphone | - | Yes |
Related Headphone Comparisons
More worthwhile head-to-heads for Tanchjim Zero Ultima:
- Tanchjim Zero Ultima vs Tin HiFi C0
- Moondrop Quarks vs Tanchjim Zero Ultima
- KZ Taurus vs Tin HiFi C0
- KZ Taurus vs TRN MT1 Pro
- KZ Taurus vs KZ ZSN Pro 2
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
KZ Taurus: $18.99 Amazon eBay
Full KZ Taurus review and specifications →
| Back | Closed |
|---|---|
| Connection | Wired |
| Deviation From Target | 1.60 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 2 x dynamic |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 9 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 36 ohms |
| Sensitivity | 105 dB/mW |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.8 dB at 30 Hz) |
| Tonal Tilt | +0.69 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Tanchjim Zero Ultima: $19.99 Amazon eBay
Full Tanchjim Zero Ultima review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 1.95 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x dynamic |
| Form Factor | In-ear |
| Frequency Response | 10Hz - 48kHz (Manufacturer specified) |
| Harman Preference Score | 76 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 30 ohms |
| Sensitivity | 123 dB/V |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.6 dB at 30 Hz) |
| Tonal Tilt | +0.03 (negative is warmer, positive brighter) |
| Weight | 0 lbs (2.3 g) per earbud |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons