Short answer: the HeartField CU8. It ranks #173 of 1291 in-ear headphones by sound quality, rated 4.4/5, at $396. The ZiiGaat Luna ranks #213, rated 4.3/5, at $379, $17 cheaper, a saving that is not big enough to make up the sound-quality gap.
The case for the HeartField CU8: Four balanced armatures produce one of the smoothest responses at this level, deviating only 1.4 dB on average from target in squig.link hobbyist measurements, for a preference score of 78. The catch: Treble is reserved, with presence about 2 dB down, a 4 dB dip near 9.5 kHz and air 3.3 dB below target, so cymbals and vocal sparkle sound a little muted.
What the ZiiGaat Luna does well: The median of 21 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.68 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural. Watch for: Presence sits about 4 dB low with a 5.3 dB dip near 3.9 kHz, so vocals and instruments lose some bite.
Buy the HeartField CU8. It is rated higher for sound quality, and saving $17 with the ZiiGaat Luna does not make up for the sound-quality gap.
Looking for alternatives? See the complete Headphones rankings.
Four balanced armatures produce one of the smoothest responses at this level, deviating only 1.4 dB on average from target in squig.link hobbyist measurements, for a preference score of 78.
Linsoul $396.00 eBay
The median of 21 hobbyist measurements gives it a very good Harman preference score of 77 with a 1.68 dB spread, and its mids sit within about 0.5 dB of target, so vocals and instruments sound natural.
Amazon $379.00 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
| HeartField CU8 | ZiiGaat Luna | |
|---|---|---|
| Price | $396.00 | $379.00 |
| Ranked | #173 of 1291 in In-Ear Headphones | #213 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 78 (median of 6 squig.link measurements, calibrated to AutoEQ) | 77 (median of 21 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.39 dB standard deviation | 1.68 dB standard deviation |
| Tonal Tilt | -0.62 (negative is warmer, positive brighter) | -0.32 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+2.2 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (-1.3 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Balanced armature | Balanced armature |
| Drivers | 4 x balanced armature | 6 x balanced armature |
| Impedance | 17 ohms | 26 ohms |
| Sensitivity | 108 dB | 103 dB |
| Frequency Response | 10Hz - 20kHz (Manufacturer specified) | 20Hz - 32kHz (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 HeartField CU8 from audioamigo, hbb, jaytiss, pw, soundcheck39 and timmyv; the ZiiGaat Luna from aden, aftersound, arn, atechreviews, audioamigo, bloomaudio, breampike, cqtek, ducbloke, enemyspider, hbb, iemocean, jaytiss, koi, practiphile, pw, silicagel, soundcheck39, superreview, timmyv and vortexreviews, all via squig.link.
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