Short answer: the Roseselsa Ceramics MK2. It ranks #503 of 1398 in-ear headphones by sound quality (rated 3.9/5) at $34.99 and is still sold new; the Roseselsa Ceramics X ranks #1017 (rated 3.2/5) and is discontinued, so it is only an option used.
Why pick the Roseselsa Ceramics X: True wireless earbuds with ANC, LDAC, Bluetooth 5.3 and a rated 10 hours per charge or 40 with the case, whose bass and midrange stay within 2.5 dB of target with sub bass reaching to 20 Hz. The catch: Treble from 5 to 8 kHz sits nearly 6 dB low with dips near 6.1 and 10.9 kHz, so it sounds dark and lacks detail.
The Roseselsa Ceramics MK2 is the better-sounding choice. The median of 4 hobbyist measurements gives it a solid Harman preference score of 72 with a 2.07 dB spread, and its mids sit within about 0.9 dB of target, so vocals and instruments sound natural. The catch: A 7.7 dB peak near 7.9 kHz can make cymbals and sibilance sound sharp.
Buy the Roseselsa Ceramics MK2. It is rated higher for sound quality, and the Roseselsa Ceramics X is discontinued, so it is only available used.
Still deciding? The full Headphones rankings cover every ranked option.
True wireless earbuds with ANC, LDAC, Bluetooth 5.3 and a rated 10 hours per charge or 40 with the case, whose bass and midrange stay within 2.5 dB of target with sub bass reaching to 20 Hz.
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The median of 4 hobbyist measurements gives it a solid Harman preference score of 72 with a 2.07 dB spread, and its mids sit within about 0.9 dB of target, so vocals and instruments sound natural.
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Specifications Side By Side
| Roseselsa Ceramics X | Roseselsa Ceramics MK2 | |
|---|---|---|
| Price | $45.99 Discontinued | $34.99 |
| Ranked | #1017 of 1398 in In-Ear Headphones | #503 of 1398 in In-Ear Headphones |
| Form Factor | In-ear | In-ear |
| Back | Closed | Closed |
| Connection | True wireless | True wireless |
| Driver Type | Dynamic | Dynamic |
| Drivers | 1 x 10mm dynamic (carbon nanotube diaphragm) | 1 x 10mm dynamic |
| Bluetooth Version | 5.3 | 6.0 |
| Bluetooth Codecs | SBC, AAC, LDAC | SBC, AAC, LDAC |
| Battery Life | 10 hours (earbuds), 40 hours total with case | 12 hours (45 with case, Manufacturer specified) |
| Active Noise Cancelling | Yes | Yes |
| Harman Preference Score | 64 (median of 4 squig.link measurements, calibrated to AutoEQ) | 72 (median of 4 squig.link measurements, calibrated to AutoEQ) |
| Deviation From Target | 2.61 dB standard deviation | 2.07 dB standard deviation |
| Tonal Tilt | -0.91 (negative is warmer, positive brighter) | -0.48 (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 (-0.4 dB at 30 Hz) |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| Weight | - | 0 lbs (4.3 g) per earbud |
| Built-in Microphone | - | Yes |
| IP Rating | - | IPX4 |
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 Roseselsa Ceramics X from hobbytalk, practiphile, regancipher and suporsalad; the Roseselsa Ceramics MK2 from csi-zone, digaoreviews, regancipher and soundignity, all via squig.link.
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