Short answer: a tie on sound quality. Both are rated 3.3/5 (#968 and #910 of 1369 in-ear headphones) at nearly the same price ($9.99 vs $9.99), so choose on features and fit.
Why pick the CVJ Kira: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. The catch: An uneven response, 2.5 dB standard deviation from target.
Why pick the FiiO x JadeAudio JH5: A broadly balanced tuning with a preference score of 66 against the Harman target. Watch for: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the CVJ Kira or the FiiO x JadeAudio JH5 on features: they are rated the same for sound quality at close to the same price.
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A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Linsoul eBay
A broadly balanced tuning with a preference score of 66 against the Harman target.
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Specifications Side By Side
| CVJ Kira | FiiO x JadeAudio JH5 | |
|---|---|---|
| Price | 9.99 | 9.99 |
| Ranked | #968 of 1369 in In-Ear Headphones | #910 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 65 (median of 3 squig.link measurements, calibrated to AutoEQ) | 66 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.47 dB standard deviation | 2.43 dB standard deviation |
| Tonal Tilt | -0.83 (negative is warmer, positive brighter) | -0.69 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.1 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm PET composite dynamic driver | 1 DD + 4 BA (1 x 10mm carbon-based dynamic driver + 4 x custom balanced armatures) |
| Impedance | 22 ohms | 13 ohms |
| Sensitivity | 102 dB/mW | 111 dB/mW |
| Frequency Response | 20Hz - 20kHz | 20Hz - 40,000Hz |
| Weight | 0 lbs (6 g) | 0 lbs (7.6 g) (per earpiece) |
| Connection | Wired | Wired |
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 CVJ Kira from eplv, kuping-sensi and soundignity; the FiiO x JadeAudio JH5 from ekaudio, flare, iemocean, joshtbvo and superreview, all via squig.link.
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