Short answer: a tie on sound quality. Both are rated 4.0/5 (#418 and #387 of 1291 in-ear headphones) at nearly the same price ($55 vs $59.99), so choose on features and fit.
The case for the Cozoy D2: The median of 16 hobbyist measurements gives it a solid Harman preference score of 74 with a 2.11 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural. The tradeoff: Presence sits about 3.6 dB low with a 7.5 dB dip near 6.3 kHz, so vocals and instruments lose some bite.
The case for the Moondrop Lan 2: The median of 6 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.82 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural. The tradeoff: Its 1.82 dB spread is less even than the best measured sets.
Buy the Cozoy D2 or the Moondrop Lan 2 on features: they are rated the same for sound quality at close to the same price.
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The median of 16 hobbyist measurements gives it a solid Harman preference score of 74 with a 2.11 dB spread, and its mids sit within about 0.7 dB of target, so vocals and instruments sound natural.
Cozoy $55 eBay
The median of 6 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.82 dB spread, and its mids sit within about 0.6 dB of target, so vocals and instruments sound natural.
Amazon $59.99 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
| Cozoy D2 | Moondrop Lan 2 | |
|---|---|---|
| Price | $55 | $59.99 |
| Ranked | #418 of 1291 in In-Ear Headphones | #387 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 6mm dynamic | 1 x 10mm dynamic |
| Impedance | 20 ohms | 30 ohms |
| Frequency Response | 10Hz - 50kHz (Manufacturer specified) | 12Hz - 60kHz (Manufacturer specified) |
| Harman Preference Score | 74 (median of 16 squig.link measurements, calibrated to AutoEQ) | 74 (median of 6 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.11 dB standard deviation | 1.82 dB standard deviation |
| Tonal Tilt | -0.09 (negative is warmer, positive brighter) | -0.53 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-2.9 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.4 dB at 30 Hz) |
| Sensitivity | - | 118 dB SPL/V |
| 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 Cozoy D2 from aftersound, ankramutt, audioamigo, bassaudio, digaoreviews, ducbloke, elrics, fahryst, fernandagunsan, hbb, jaytiss, musicafe, practiphile, soundcheck39, superreview and tonedeafmonk; the Moondrop Lan 2 from atechreviews, audioamigo, bassaudio, hu-fi, practiphile and superreview, all via squig.link.
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