Short answer: the KZ EDCX. It ranks #838 of 1291 in-ear headphones by sound quality, rated 3.5/5, at $10; the FiiO x JadeAudio JH5 ranks #895, rated 3.3/5, at $9.99. With prices this close, go by the sound-quality ranking rather than the cost.
What the KZ EDCX does well: An ultra cheap single dynamic IEM with full sub-bass to 20 Hz and a Harman preference score of 67 across five measurements. Watch for: Bass sits about 3.0 dB above target, a bass heavy balance.
The case for the FiiO x JadeAudio JH5: A broadly balanced tuning with a preference score of 66 against the Harman target. The tradeoff: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the KZ EDCX. It is rated higher for sound quality, and saving $0.01 with the FiiO x JadeAudio JH5 does not make up for the sound-quality gap.
Looking for alternatives? See the complete Headphones rankings.
An ultra cheap single dynamic IEM with full sub-bass to 20 Hz and a Harman preference score of 67 across five measurements.
Linsoul $10.00 eBay
A broadly balanced tuning with a preference score of 66 against the Harman target.
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Specifications Side By Side
| KZ EDCX | FiiO x JadeAudio JH5 | |
|---|---|---|
| Price | $10.00 | 9.99 |
| Ranked | #838 of 1291 in In-Ear Headphones | #895 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Hybrid |
| Drivers | 1 x 10mm dynamic | 1 DD + 4 BA (1 x 10mm carbon-based dynamic driver + 4 x custom balanced armatures) |
| Harman Preference Score | 67 (median of 5 squig.link measurements, calibrated to AutoEQ) | 66 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.25 dB standard deviation | 2.43 dB standard deviation |
| Tonal Tilt | -0.84 (negative is warmer, positive brighter) | -0.69 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+1.8 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.9 dB at 30 Hz) |
| Impedance | - | 13 ohms |
| Sensitivity | - | 111 dB/mW |
| Frequency Response | - | 20Hz - 40,000Hz |
| Weight | - | 0 lbs (7.6 g) (per earpiece) |
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 KZ EDCX from hbb, hore, ianfann, practiphile and suporsalad; the FiiO x JadeAudio JH5 from ekaudio, flare, iemocean, joshtbvo and superreview, all via squig.link.
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