Short answer: the TANGZU Wu Heyday. It ranks #166 of 1291 in-ear headphones by sound quality, rated 4.4/5, at $24.99; the KZ CRN ranks #200, rated 4.3/5, at $23.99. The price gap is small enough that the sound-quality ranking should decide it.
What the TANGZU Wu Heyday does well: A 14.5mm planar magnetic driver at an entry level price earns a preference score of 78.3 across 13 hobbyist measurements on squig.link. The tradeoff: The presence region sits about 3.3 dB under target with a 5 dB dip near 6.3 kHz, while air above 10 kHz is lifted about 4.3 dB, so treble sounds recessed in one spot and sizzly in another.
The case for the KZ CRN: The median of 10 hobbyist measurements gives it a very good Harman preference score of 78 with a 1.60 dB spread. Watch for: Presence sits about 3.3 dB low with a 6.1 dB dip near 11.9 kHz, so vocals and instruments lose some bite.
Buy the TANGZU Wu Heyday. It is rated higher for sound quality, and the $1 you would save on the KZ CRN does not close the gap.
Still deciding? The full Headphones rankings cover every ranked option.
A 14.5mm planar magnetic driver at an entry level price earns a preference score of 78.3 across 13 hobbyist measurements on squig.link.
Amazon $24.99 eBay
The median of 10 hobbyist measurements gives it a very good Harman preference score of 78 with a 1.60 dB spread.
Amazon $23.99 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
| TANGZU Wu Heyday | KZ CRN | |
|---|---|---|
| Price | $24.99 | $23.99 |
| Ranked | #166 of 1291 in In-Ear Headphones | #200 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 13 squig.link measurements, calibrated to AutoEQ) | 78 (median of 10 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.70 dB standard deviation | 1.60 dB standard deviation |
| Tonal Tilt | -0.09 (negative is warmer, positive brighter) | -0.26 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-1.7 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.9 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Planar magnetic | Hybrid (1 dynamic + 1 balanced armature + 1 electrostatic) |
| Drivers | 1 x 14.5mm planar magnetic | 1 x 10mm dynamic + 1 x balanced armature + 1 x 6.8mm electrostatic |
| Impedance | 16 ohms | 25 ohms |
| Sensitivity | 100 dB | 104 dB |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | 20Hz - 40kHz (Manufacturer specified) |
| Built-in Microphone | No | - |
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 TANGZU Wu Heyday from aftersound, audioamigo, bukanaudiophile, csi-zone, ducbloke, hu-fi, iemocean, lown-fi, musicafe, pw, scboy, seanwee, soundcheck39, soundignity, therollo9 and vortexreviews; the KZ CRN from aden, bedrock, breampike, hobbytalk, jaytiss, kr0mka, listener, nymz, superreview and suporsalad, all via squig.link.
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