Short answer: the Kinera Celest Yaksha. It ranks #727 of 1291 in-ear headphones by sound quality, rated 3.6/5, at $139; the Acoustune Monitor RS ONE ranks #844, rated 3.5/5, and costs $139.29, which makes this an easy call rather than a real tradeoff.
What the Kinera Celest Yaksha does well: A four driver hybrid with two dynamic drivers, a Knowles balanced armature and a micro planar. The tradeoff: Treble sits about 3.0 dB below target, a dark, relaxed balance.
The case for the Acoustune Monitor RS ONE: A broadly balanced tuning with a preference score of 67 against the Harman target. Watch for: Treble about 3 dB above target from 3 to 10 kHz, which can sound sharp or tiring at higher volume.
Buy the Kinera Celest Yaksha. It is rated higher for sound quality than the Acoustune Monitor RS ONE and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Headphones rankings cover every ranked option.
A four driver hybrid with two dynamic drivers, a Knowles balanced armature and a micro planar.
Amazon $139.00 eBay
A broadly balanced tuning with a preference score of 67 against the Harman target.
Amazon $139.29 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
| Kinera Celest Yaksha | Acoustune Monitor RS ONE | |
|---|---|---|
| Price | $139.00 | $139.29 |
| Ranked | #727 of 1291 in In-Ear Headphones | #844 of 1291 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | Wired | Wired (3.5mm) |
| Driver Type | Hybrid | Dynamic |
| Drivers | 2 x dynamic + 1 x balanced armature + 1 x micro planar | 1 Dynamic (9.2mm Myrinx EL) |
| Harman Preference Score | 69 (median of 10 squig.link measurements, calibrated to AutoEQ) | 67 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.18 dB standard deviation | 2.46 dB standard deviation |
| Tonal Tilt | -0.71 (negative is warmer, positive brighter) | -0.33 (negative is warmer, positive brighter) |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (+0.0 dB at 30 Hz) | Within 6 dB of target down to 20 Hz (+0.8 dB at 30 Hz) |
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 Kinera Celest Yaksha from arn, atechreviews, audioamigo, dl, gadgetgenerations, hbb, jaytiss, pw, soundcheck39 and tonedeafmonk; the Acoustune Monitor RS ONE from bryaudioreviews, hbb, jaytiss, practiphile and superreview, all via squig.link.
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