Short answer: a tie on sound quality. Both are rated 4.1/5 (#312 and #362 of 1291 in-ear headphones) at nearly the same price ($23.99 vs $23.90), so choose on features and fit.
The case for the Tanchjim Bunny: A very affordable single dynamic in-ear with a built in microphone that reaches a preference score of 75 in squig.link hobbyist measurements. The catch: Sub-bass falls about 2.5 dB below target and is down 3.2 dB at 30 Hz, so the deepest synth notes have less rumble than the mid bass suggests.
Why pick the TINHIFI C0: A broadly balanced tuning with a preference score of 75 against the Harman target. The catch: About 3 dB less bass than the Harman target below 150 Hz, which can sound thin on pop, hip hop and electronic music.
Buy the Tanchjim Bunny or the TINHIFI C0 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.
A very affordable single dynamic in-ear with a built in microphone that reaches a preference score of 75 in squig.link hobbyist measurements.
Amazon $23.99 eBay
A broadly balanced tuning with a preference score of 75 against the Harman target.
Amazon $23.90 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
| Tanchjim Bunny | TINHIFI C0 | |
|---|---|---|
| Price | $23.99 | $23.90 |
| Ranked | #312 of 1291 in In-Ear Headphones | #362 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 75 (median of 18 squig.link measurements, calibrated to AutoEQ) | 75 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.98 dB standard deviation | 1.95 dB standard deviation |
| Tonal Tilt | -0.05 (negative is warmer, positive brighter) | +0.42 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-4.7 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x dynamic | 1 x 10mm dynamic |
| Impedance | 30 ohms | 32 ohms |
| Sensitivity | 123 dB/Vrms | 105 dB |
| Frequency Response | 8Hz - 48kHz (Manufacturer specified) | - |
| Built-in Microphone | Yes | - |
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 Tanchjim Bunny from aftersound, atechreviews, audioamigo, banzai1122, boizoff, csi-zone, digaoreviews, eplv, fernandagunsan, jaytiss, lumerion, samreviews, soundignity, superreview, therollo9, tonedeafmonk, treblewellxtended and vortexreviews; the TINHIFI C0 from achoreviews, ankramutt, dvewlsh, practiphile, soundcheck39, superreview, tonedeafmonk and yoshiultra, all via squig.link.
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