Short answer: the Moondrop Space Travel 2. It ranks #705 of 1291 in-ear headphones by sound quality, rated 3.6/5, at $29.99; the HZSOUND Luna ranks #808, rated 3.5/5, at $29.99. Close enough in price that the sound-quality gap is the deciding factor.
Why pick the Moondrop Space Travel 2: The median of 15 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.45 dB spread, and its mids sit within about 1.3 dB of target, so vocals and instruments sound natural. The tradeoff: Presence sits about 4.5 dB low with a 10.9 dB dip near 10.9 kHz, so vocals and instruments lose some bite.
What the HZSOUND Luna does well: A broadly balanced tuning with a preference score of 68 against the Harman target. Watch for: Treble about 2 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the Moondrop Space Travel 2. It is rated higher for sound quality than the HZSOUND Luna at the same price, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Headphones rankings.
The median of 15 hobbyist measurements gives it a solid Harman preference score of 69 with a 2.45 dB spread, and its mids sit within about 1.3 dB of target, so vocals and instruments sound natural.
Amazon $29.99 eBay
A broadly balanced tuning with a preference score of 68 against the Harman target.
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Specifications Side By Side
| Moondrop Space Travel 2 | HZSOUND Luna | |
|---|---|---|
| Price | $29.99 | $29.99 |
| Ranked | #705 of 1291 in In-Ear Headphones | #808 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | True wireless | Wired (3.5mm) |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 13mm dynamic | 1 Dynamic (10mm flat diaphragm) |
| Frequency Response | 20Hz - 20kHz | - |
| Harman Preference Score | 69 (median of 15 squig.link measurements, calibrated to AutoEQ) | 68 (median of 7 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.45 dB standard deviation | 2.31 dB standard deviation |
| Tonal Tilt | +0.07 (negative is warmer, positive brighter) | -0.69 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-5.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.7 dB at 30 Hz) |
| Bluetooth Version | 6.0 | - |
| Bluetooth Codecs | SBC, AAC | - |
| Battery Life | 7 hours (earbuds), 31 hours with case | - |
| Active Noise Cancelling | Yes | - |
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 Moondrop Space Travel 2 from aftersound, atechreviews, boizoff, csi-zone, dhrme, fernandagunsan, filk, hu-fi, jaraba, listener, lown-fi, practiphile, regancipher, soundignity and superreview; the HZSOUND Luna from audioamigo, eplv, pw, soundcheck39, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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