Short answer: the BGVP Phantom. Both are rated 4.2/5 for sound quality (#300 and #250 of 1291 in-ear headphones), and the BGVP Phantom costs $899 against $989 for the Letshuoer Mystic 8, so with nothing between them on sound quality, price settles it.
Why pick the BGVP Phantom: An eight-driver in-ear flagship that measures close to the Harman target, with a 76 score and full sub-bass to 20 Hz. Watch for: Expensive at about $899, and sold mainly through Shenzhenaudio.
Why pick the Letshuoer Mystic 8: The median of 23 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.69 dB spread, and its mids sit within about 1.3 dB of target, so vocals and instruments sound natural. The tradeoff: Presence sits about 3.7 dB low with a 4.5 dB dip near 5.9 kHz, so vocals and instruments lose some bite.
Buy the BGVP Phantom. Both are rated the same for sound quality, and it costs $90 less than the Letshuoer Mystic 8.
Looking for alternatives? See the complete Headphones rankings.
An eight-driver in-ear flagship that measures close to the Harman target, with a 76 score and full sub-bass to 20 Hz.
Shenzhenaudio $899.00 eBay
The median of 23 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.69 dB spread, and its mids sit within about 1.3 dB of target, so vocals and instruments sound natural.
Linsoul $989.00 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
| BGVP Phantom | Letshuoer Mystic 8 | |
|---|---|---|
| Price | $899.00 | $989.00 |
| Ranked | #300 of 1291 in In-Ear Headphones | #250 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired |
| Driver Type | Quadbrid | Balanced armature |
| Drivers | 2 x dynamic + 2 x Knowles balanced armature + 2 x Sonion electrostatic + 2 x bone conduction | 8 x balanced armature |
| Impedance | 12 ohms | 18 ohms |
| Sensitivity | 107 dB/mW | 107 dB |
| Harman Preference Score | 76 (median of 6 squig.link measurements, calibrated to AutoEQ) | 77 (median of 23 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.66 dB standard deviation | 1.69 dB standard deviation |
| Tonal Tilt | -0.26 (negative is warmer, positive brighter) | +0.10 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-2.9 dB at 30 Hz) |
| Frequency Response | 10Hz - 40kHz | 20Hz - 40kHz (Manufacturer specified) |
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 BGVP Phantom from animagus, ducbloke, isaiahse, sl0the, superreview and timmyv; the Letshuoer Mystic 8 from aden, atechreviews, audioamigo, cqtek, dl, fahryst, faxepremium, gadgetgenerations, hbb, hu-fi, jaytiss, kazi, koi, lown-fi, obodio, practiphile, pw, sl0the, soundignity, superreview, theaudiostore, tonedeafmonk and treblewellxtended, all via squig.link.
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