Short answer: the Truthear Pure. Both are rated 3.4/5 for sound quality (#848 and #886 of 1291 in-ear headphones), and the Truthear Pure costs $89.99 against $99 for the KBear Tourbillon Pro, and with sound quality even, the cheaper one is the better buy.
The case for the KBear Tourbillon Pro: A broadly balanced tuning with a preference score of 66 against the Harman target. The catch: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
What the Truthear Pure does well: Bass and lower mids sit right on target across 37 measurements, so the sound is clean and uncolored with no bloat. Watch for: The sound is subdued up top: the 1 to 3 kHz region is about 3 dB low and presence about 5.5 dB low, with a 6.3 dB dip near 6.3 kHz, so vocals sound recessed and treble lacks detail.
Buy the Truthear Pure. Both are rated the same for sound quality, and it costs $9.01 less than the KBear Tourbillon Pro.
Looking for alternatives? See the complete Headphones rankings.
A broadly balanced tuning with a preference score of 66 against the Harman target.
KeepHiFi $99.00 eBay
Bass and lower mids sit right on target across 37 measurements, so the sound is clean and uncolored with no bloat.
Amazon $89.99 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
| KBear Tourbillon Pro | Truthear Pure | |
|---|---|---|
| Price | $99.00 | $89.99 |
| Ranked | #886 of 1291 in In-Ear Headphones | #848 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 66 (median of 6 squig.link measurements, calibrated to AutoEQ) | 67 (median of 37 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.32 dB standard deviation | 2.28 dB standard deviation |
| Tonal Tilt | -0.89 (negative is warmer, positive brighter) | -0.56 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic driver (PU + PEEK + DLC composite diaphragm) | 1 x 10mm LCP dynamic + 3 x balanced armature |
| Impedance | 19 ohms | 13.8 ohms |
| Sensitivity | 101 dB/mW | 124 dB/Vrms |
| Frequency Response | 20Hz - 20kHz | 7Hz - 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 KBear Tourbillon Pro from audioamigo, eplv, practiphile, pw, soundcheck39 and tonedeafmonk; the Truthear Pure from aden, aftersound, aquaphobic, arn, atechreviews, audioamigo, banzai1122, bassaudio, bedrock, bloomaudio, boizoff, breampike, csi-zone, dl, doltonius, fernandagunsan, filk, flare, hobbytalk, hu-fi, iemocean, iemworld, jaytiss, koi, kr0mka, lestat, listener, lown-fi, practiphile, recode, soundignity, superreview, suporsalad, theaudiostore, timmyv, treblewellxtended, vortexreviews and zerostresslevel, all via squig.link.
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