Short answer: the Kiwi Ears Astral. It ranks #405 of 1291 in-ear headphones by sound quality, rated 4.0/5, at $299; the Hisenior Mega5P Ultra ranks #537, rated 3.9/5, at $299. With prices this close, go by the sound-quality ranking rather than the cost.
What the Kiwi Ears Astral does well: The median of 26 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.77 dB spread, and its mids sit within about 1.4 dB of target, so vocals and instruments sound natural. Watch for: Presence sits about 4.7 dB low with a 6.1 dB dip near 5.9 kHz, so vocals and instruments lose some bite.
Why pick the Hisenior Mega5P Ultra: A broadly balanced tuning with a preference score of 72 against the Harman target. Watch for: Treble about 4 dB below target from 3 to 10 kHz, which can sound dull or veiled next to brighter headphones.
Buy the Kiwi Ears Astral. It is rated higher for sound quality than the Hisenior Mega5P Ultra at the same price, so only choose the other one for a particular feature it does better.
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The median of 26 hobbyist measurements gives it a solid Harman preference score of 74 with a 1.77 dB spread, and its mids sit within about 1.4 dB of target, so vocals and instruments sound natural.
Amazon $299.00 eBay
A broadly balanced tuning with a preference score of 72 against the Harman target.
Audio Concierge $299 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
| Kiwi Ears Astral | Hisenior Mega5P Ultra | |
|---|---|---|
| Price | $299.00 | $299 |
| Ranked | #405 of 1291 in In-Ear Headphones | #537 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Harman Preference Score | 74 (median of 26 squig.link measurements, calibrated to AutoEQ) | 72 (median of 5 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 1.77 dB standard deviation | 2.00 dB standard deviation |
| Tonal Tilt | -0.74 (negative is warmer, positive brighter) | -0.55 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.5 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.2 dB at 30 Hz) |
| Connection | Wired | Wired |
| Driver Type | Hybrid (1 dynamic + 6 balanced armature) | Hybrid (1 dynamic + 4 balanced armature) |
| Drivers | 1 x 10mm dynamic + 6 x balanced armature | 1 x 10mm dynamic + 4 x balanced armature |
| Impedance | 23 ohms | - |
| Sensitivity | 105 dB | - |
| Frequency Response | 10Hz - 22kHz (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 Kiwi Ears Astral from aden, aftersound, arn, atechreviews, audioamigo, avishai, bassaudio, bloomaudio, cqtek, fernandagunsan, gadgetrytech, hobbytalk, jaytiss, koi, kuping-sensi, obodio, practiphile, pw, samreviews, silicagel, sl0the, soundcheck39, soundignity, superreview, timmyv and vortexreviews; the Hisenior Mega5P Ultra from flare, lown-fi, mmagtech, sl0the and therollo9, all via squig.link.
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