Short answer: the Unique Melody MEST Mk2. Both are rated 3.4/5 for sound quality (#864 and #858 of 1291 in-ear headphones), and the Unique Melody MEST Mk2 costs $1,499 against $1,620 for the Custom Art FIBAE 7 Unlimited, with sound quality a draw, the lower price decides it.
What the Custom Art FIBAE 7 Unlimited does well: A broadly balanced tuning with a preference score of 67 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.
What the Unique Melody MEST Mk2 does well: Sub-bass and bass sit right on target down to 20 Hz across 13 hobbyist measurements on squig.link, giving kick drums and synth bass full, clean weight without bloat. The tradeoff: A 7.4 dB dip near 3.9 kHz, with the 3 to 6 kHz presence region about 5.6 dB below target, pushes vocals and guitars back and can make them sound distant.
Buy the Unique Melody MEST Mk2. Both are rated the same for sound quality, and it costs $121 less than the Custom Art FIBAE 7 Unlimited.
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A broadly balanced tuning with a preference score of 67 against the Harman target.
Custom Art $1,620.00 eBay
Sub-bass and bass sit right on target down to 20 Hz across 13 hobbyist measurements on squig.link, giving kick drums and synth bass full, clean weight without bloat.
Linsoul $1,499.00 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
| Custom Art FIBAE 7 Unlimited | Unique Melody MEST Mk2 | |
|---|---|---|
| Price | $1,620.00 | $1,499.00 |
| Ranked | #858 of 1291 in In-Ear Headphones | #864 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) | 66 (measured by crinacle, via AutoEQ) |
| Deviation From Target | 2.49 dB standard deviation | 2.47 dB standard deviation |
| Tonal Tilt | -0.42 (negative is warmer, positive brighter) | -0.71 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-3.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced Armature | Hybrid (1 dynamic + 4 balanced armature + 2 electrostatic + 1 bone conduction) |
| Drivers | 7 x balanced armature (2 sub-low, 1 low-mid, 2 mid-high, 1 high, 1 super high) | 1 x dynamic + 4 x balanced armature + 2 x electrostatic + 1 x bone conduction |
| Impedance | 12 ohms | 12.3 ohms |
| Sensitivity | 122 dB | 112 dB |
| Frequency Response | 10Hz - 21kHz | 20Hz - 70kHz (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 Custom Art FIBAE 7 Unlimited from dl, harutohiroki, hbb and precog; the Unique Melody MEST Mk2 from achoreviews, aftersound, animagus, bassaudio, dl, musicafe, nymz, precog, recode, scboy, sl0the, timmyv and tonedeafmonk, all via squig.link.
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