Short answer: the KZ EDCX. It ranks #838 of 1291 in-ear headphones by sound quality, rated 3.5/5, at $10; the Tangzu Xue Tao ranks #925, rated 3.3/5, at $9.99. The price gap is small enough that the sound-quality ranking should decide it.
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. The catch: Bass sits about 3.0 dB above target, a bass heavy balance.
Why pick the Tangzu Xue Tao: A broadly balanced tuning with a preference score of 65 against the Harman target. The catch: Treble about 4 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 the $0.01 saving on the Tangzu Xue Tao is not enough to make up the difference.
Still deciding? The full Headphones rankings cover every ranked option.
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 65 against the Harman target.
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Specifications Side By Side
| KZ EDCX | Tangzu Xue Tao | |
|---|---|---|
| Price | $10.00 | 9.99 |
| Ranked | #838 of 1291 in In-Ear Headphones | #925 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic | 1 x 10mm glass-centered PET-edged diaphragm dynamic driver |
| Harman Preference Score | 67 (median of 5 squig.link measurements, calibrated to AutoEQ) | 65 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.25 dB standard deviation | 2.36 dB standard deviation |
| Tonal Tilt | -0.84 (negative is warmer, positive brighter) | -1.04 (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 (+1.2 dB at 30 Hz) |
| Impedance | - | 18.5 ohms |
| Sensitivity | - | 109 dB |
| Frequency Response | - | 20Hz - 20,000Hz |
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 Tangzu Xue Tao from aftersound, atechreviews, bassaudio, csi-zone, jaytiss and soundignity, all via squig.link.
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