Short answer: the Harmonic Empire Cai Wenji. It ranks #956 of 1369 in-ear headphones by sound quality, rated 3.3/5, at $1.99; the CCZ BC02 ranks #1036, rated 3.1/5, and costs $2, which makes this an easy call rather than a real tradeoff.
The case for the Harmonic Empire Cai Wenji: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. Watch for: Treble about 5 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Why pick the CCZ BC02: A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap. The tradeoff: An uneven response, 2.7 dB standard deviation from target.
Buy the Harmonic Empire Cai Wenji. It is rated higher for sound quality than the CCZ BC02 and costs less, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Headphones rankings.
A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
Shenzhen Audio eBay
A published AutoEQ preset corrects its response toward the Harman target, so a few minutes of EQ setup closes most of the gap.
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Specifications Side By Side
| Harmonic Empire Cai Wenji | CCZ BC02 | |
|---|---|---|
| Price | 1.99 | 2.00 |
| Ranked | #956 of 1369 in In-Ear Headphones | #1036 of 1369 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 65 (median of 7 squig.link measurements, calibrated to AutoEQ) | 63 (median of 3 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.58 dB standard deviation | 2.72 dB standard deviation |
| Tonal Tilt | -0.81 (negative is warmer, positive brighter) | -0.58 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+1.2 dB at 30 Hz) |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm PEEK+PU dynamic driver | 1 x 10mm dynamic driver (CNT diaphragm) |
| Impedance | 16 ohms | 18 ohms |
| Sensitivity | 114 dB | 108 dB |
| Frequency Response | 20Hz - 20kHz | 20Hz - 20kHz |
| Weight | 0 lbs (3.9 g) | 0 lbs (4 g) (per earbud) |
| 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 Harmonic Empire Cai Wenji from aftersound, bassaudio, csi-zone, dvewlsh, fernandagunsan, hbb and soundignity; the CCZ BC02 from eplv, pw and tdl, all via squig.link.
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