Short answer: a tie on sound quality. Both are rated 4.5/5 (#80 and #67 of 450 in-ear headphones) at nearly the same price ($20.99 vs $22.99), so choose on features and fit.
Why pick the KZ Krila: For a budget hybrid it measures remarkably well, with a preference score of 79.6 and a 1.65 dB spread in the median of 8 squig.link measurements. The tradeoff: Sub-bass sits about 1.9 dB under target below 60 Hz, so the deepest rumble in electronic and film scores is a little restrained.
What the Tanchjim Ola Bass does well: In the median of five squig.link measurements it scores 80.2 for preference, and its treble is remarkably even, with no peak larger than 1.6 dB or dip deeper than 1.9 dB between 1.5 and 12 kHz. The catch: Sub-bass trails the midbass by about 3 dB, so the deepest rumble is lighter than the bass emphasis above it.
Buy the KZ Krila or the Tanchjim Ola Bass 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 Krila | Tanchjim Ola Bass | |
|---|---|---|
| Price | $20.99 | $22.99 |
| Ranked | #80 of 450 in In-Ear Headphones | #67 of 450 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 80 (median of 8 squig.link measurements, calibrated to AutoEQ) | 80 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.65 dB standard deviation | 1.48 dB standard deviation |
| Tonal Tilt | -0.02 (negative is warmer, positive brighter) | -0.16 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) | Dynamic |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature | 1 x 10mm dynamic |
| Sensitivity | 106 dB | 126 dB/Vrms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 7Hz - 45kHz (Manufacturer specified) |
| Impedance | - | 16 ohms |
| Built-in Microphone | - | Yes |
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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
KZ Krila: $20.99 Amazon eBay
Pros: For a budget hybrid it measures remarkably well, with a preference score of 79.6 and a 1.65 dB spread in the median of 8 squig.link measurements. Bass, low mids and upper mids all sit within 0.5 dB of target, so vocals and instruments come across natural and balanced. A 3.5 dB lift in the air band adds airy detail on top.
Cons: Sub-bass sits about 1.9 dB under target below 60 Hz, so the deepest rumble in electronic and film scores is a little restrained. A 5.3 dB dip near 6 kHz followed by a 6.4 dB peak near 11.9 kHz makes the treble uneven, softening some consonants while adding a touch of glare high up.
Full KZ Krila review and specifications →
| Released | Jul 2023 (3 years ago) |
|---|---|
| Back | Closed |
| Connection | Wired |
| Deviation From Target | 1.65 dB standard deviation |
| Driver Type | Hybrid (1 dynamic + 1 balanced armature) |
| Drivers | 1 x 10mm dynamic + 1 x balanced armature |
| Form Factor | In-ear |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) |
| Harman Preference Score | 80 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Sensitivity | 106 dB |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.0 dB at 30 Hz) |
| Tonal Tilt | -0.02 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Tanchjim Ola Bass: $22.99 Amazon eBay
Pros: In the median of five squig.link measurements it scores 80.2 for preference, and its treble is remarkably even, with no peak larger than 1.6 dB or dip deeper than 1.9 dB between 1.5 and 12 kHz. A 2.1 dB bass lift gives the warm, punchy low end its name promises. At 126 dB/Vrms and 16 ohms it runs effortlessly from a phone, and the inline mic handles calls.
Cons: Sub-bass trails the midbass by about 3 dB, so the deepest rumble is lighter than the bass emphasis above it. Low mids sit about 1.1 dB above target, which can make dense mixes sound slightly thick.
Full Tanchjim Ola Bass review and specifications →
| Back | Closed |
|---|---|
| Built-in Microphone | Yes |
| Connection | Wired |
| Deviation From Target | 1.48 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 10mm dynamic |
| Form Factor | In-ear |
| Frequency Response | 7Hz - 45kHz (Manufacturer specified) |
| Harman Preference Score | 80 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Impedance | 16 ohms |
| Sensitivity | 126 dB/Vrms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Tonal Tilt | -0.16 (negative is warmer, positive brighter) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons