Short answer: the Shuoer DZ4. It ranks #169 of 1291 in-ear headphones by sound quality, rated 4.4/5, at $24; the Moondrop Beautiful World ranks #216, rated 4.3/5, and costs $24.99, which makes this an easy call rather than a real tradeoff.
Why pick the Shuoer DZ4: Three 6mm dynamic drivers plus a passive radiator earn a preference score of 78.2 across 19 hobbyist measurements on squig.link, with midrange almost exactly on target from 200 Hz to 3 kHz. The tradeoff: Treble from 6 to 10 kHz averages 3.4 dB under target with a 7.8 dB dip near 10 kHz, so cymbals lose shimmer and recordings sound less airy and detailed.
Why pick the Moondrop Beautiful World: The median of 8 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.78 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. The tradeoff: Sub-bass is 3.6 dB short at 30 Hz, so deep bass lacks rumble.
Buy the Shuoer DZ4. It is rated higher for sound quality than the Moondrop Beautiful World and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Headphones rankings cover every ranked option.
Three 6mm dynamic drivers plus a passive radiator earn a preference score of 78.2 across 19 hobbyist measurements on squig.link, with midrange almost exactly on target from 200 Hz to 3 kHz.
Amazon $24.00 eBay
The median of 8 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.78 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
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Specifications Side By Side
| Shuoer DZ4 | Moondrop Beautiful World | |
|---|---|---|
| Price | $24.00 | $24.99 |
| Ranked | #169 of 1291 in In-Ear Headphones | #216 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 20 squig.link measurements, calibrated to AutoEQ) | 77 (median of 8 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.56 dB standard deviation | 1.78 dB standard deviation |
| Tonal Tilt | -0.29 (negative is warmer, positive brighter) | +0.17 (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 (-3.6 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Dynamic | Dynamic |
| Drivers | 3 x 6mm dynamic + 1 x 6mm passive radiator | 1 x 10mm dynamic |
| Impedance | 12 ohms | 32 ohms |
| Sensitivity | 104 dB | 122 dB SPL/Vrms |
| Frequency Response | 20Hz - 40kHz (Manufacturer specified) | 10Hz - 45kHz (Manufacturer specified) |
| Built-in Microphone | No | 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 Shuoer DZ4 from achoreviews, aftersound, ankramutt, arc, arn, audioamigo, cammyfi, cqtek, dchpgall, fahryst, hbb, hobbytalk, ianfann, listener, practiphile, soundcheck39, superreview, tonedeafmonk, vortexreviews and vsg; the Moondrop Beautiful World from aftersound, audioamigo, bloomaudio, harutohiroki, hbb, koi, sl0the and timmyv, all via squig.link.
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