Sonic Compass · Mojo Review · Earbuds · Session Review
Roseselsa Ceramics MK2
A big V-shaped true wireless earbud with LDAC, huge punchy bass and an airy treble, for about US$30.
If your budget is locked at about US$35, the Ceramics MK2 is fantastic for that money: a big V-shape, huge bass and detailed treble. The stage isn't a standout, but for the price it is excellent.
- Massive, clean bass
- Detailed, airy treble
- Full, weighty vocals
- LDAC, ANC and a good app for about US$30
- Clear instrument separation for the price
Where it sits
Sonic Compass does not score gear out of ten. Gear and listeners are plotted on the same seven axes, so a review tells you where a product sits — and you can see how far that is from where you sit. A position is a description, not a grade.
- Tone ColourBalanced · 50%
- Texture DetailDetailed · 72%
- Dynamics JumpPunchy · 78%
- Space & ImagingBalanced · 50%
- Timing & FlowBalanced · 55%
- Comfort & FatigueEasy-going · 60%
- Emotional EngagementImmersive · 68%
A big V: massive bass, recessed mids and an airy treble, balanced in the middle (high = warm on this scale).
Detailed and airy treble with very good resolution for about US$30, edging toward sibilance.
Punchy, thumpy, clean bass that rumbles in the chest.
Not class-leading: fairly intimate and mostly left to right, with instruments you can pick out.
Not described directly; placed near the middle from the clean instrument separation at the price.
Fits well and comfortably. The treble sometimes nears sibilance, and the volume ceiling is low for loud listeners.
Big, fun and full of weight, with bass you feel in your chest.
Sonic Compass does not grade gear. We plot gear and listeners on the same seven axes, so a review tells you where a product sits and you can see how far that is from where you sit.
I came to this with a prejudice that Bluetooth audio sounds bad, and I'm an unashamed V-shaper, so read that in. Roseselsa sent both pairs. This is the Ceramics MK2 (about US$30), tested back to back with the Ceramics Ultra (about US$50), which is covered in the comparison.
I updated both pairs to the latest firmware and used the Roseselsa app, with the EQ on rock for much of the time.
Listening journey
In the Air Tonight, Sons of Legion cover (rock) — Natural but huge vocals, with the mids slightly recessed. A real body and weight for the money, and treble that sometimes nears sibilance.
You Shook Me All Night Long, AC/DC (rock) — Decently separated and fairly intimate, outside my head, with instruments I could pick out. Mainly left to right rather than holographic.
A Sound of Silence cover — Rumbled in my ears and my chest.
| Track | Position | Note |
|---|---|---|
| In the Air Tonight (cover) | 72% | Huge, natural vocals; treble sometimes near sibilance |
| You Shook Me All Night Long | 62% | Decently separated, intimate, mostly left to right |
Critical observations
Bass — Massive. It kicks in the plums: punchy, thumpy and pretty clean, with not too much bloat.
Mids and vocals — The mids are recessed a bit, yet vocals are natural, full and loud, with a real body and weight for the money.
Treble and detail — Detailed and airy, bordering on sibilance. It sometimes gets there, but most of the time it stays on the right side of it. Very good resolution for about US$30.
Stage and imaging — Not class-leading. Fairly intimate, just outside the head, mostly left to right. Clarity and instrument separation are excellent at this price.
Noise cancelling and calls — 40 dB advertised. It handles an air-conditioner hum or a lawnmower fine, but wind noise cancellation does little in strong wind. Calls were clear.
Design and app — Mauve box, good heft, fits well and comfortably, magnetised into the case. No spare tips. Bluetooth 6.0 and LDAC. The Roseselsa app (Rose Link) is intuitive, with ANC, wind-noise, transparent and off modes, a 10-band EQ with your own presets (plus rock, hi-fi and pop), game mode, dual-device connection and a choice of AAC/SBC or LDAC. I found no way to bypass the EQ.
Ceramics MK2 vs Ceramics Ultra (about US$50) — Night and day. The Ultra uses Roseselsa's self-developed Planck high-resolution drivers and adds LHDC 5.0 and a HiFi 5 DSP with its own DAC and amp stage. Bass: the MK2 is massive; the Ultra's sub-bass is less powerful with more mid-bass punch, and less visceral. Mids: lush, full, clean and natural on the Ultra. Treble: tamed on the Ultra, with no harshness and the same resolution. Stage and imaging: the biggest upgrade, wider, more holographic and more pinpointable. Noise cancelling: 50 dB against 40 dB, a couple of steps better, with better wind noise handling and a better transparent mode. The Ultra's tuning is not V-shaped and suits my ears better.
Cons — Loudness peaks too early for me, more so on the MK2; I listen at very loud levels and neither pair gets there. Changing songs has a lag of a couple of seconds. With multipoint dual-device connection on, LDAC drops back to AAC.
Read this against your own profile — I'm an unashamed V-shaper who likes clarity and detail. If you want massive bass and detail on a strict budget, the MK2 fits. If you want a smoother, wider sound, look at the Ultra. If you listen very loud, neither will get you there.
Honest limits — Supplied by the maker. By ear, with no measurements or volume matching. I couldn't bypass the EQ. Wind testing was informal, outdoors. I also came in with a bias against Bluetooth sound.
- In the Air Tonight (cover)Sons of Legion
- You Shook Me All Night LongAC/DC
- Driver Configuration
- Single 10mm titanium-coated dynamic driver (retailer listing)
- Driver Details
- 24-bit integrated DAC; Bluetooth 6.0 with LDAC, AAC, SBC (retailer listing)
- Weight
- Not stated
- Build Materials
- Mauve box; magnetised charging case
- Cable Connectors
- USB-C charging
- Isolation Leakage
- Active noise cancelling, 40dB advertised
- Power Requirements
- Up to 45 hours with the case (retailer listing)
- Accessories
- No spare ear tips supplied (reviewer)
- Build Quality Notes
- About US$30 (reviewer), US$32.99 (retailer listing). Photos: Roseselsa.
If your budget is locked at about US$35, the Ceramics MK2 is fantastic for that money: a big V-shape, huge bass and detailed treble. The stage isn't a standout, but for the price it is excellent.
<p><strong>Buy it if</strong>… you want massive, clean bass and a V-shape; you want LDAC, ANC and a good app for about US$30; or you listen casually or in bed.</p><p><strong>Skip it if</strong>… you listen at very loud levels; you're sensitive to treble that nears sibilance; or you want a wide, holographic stage (look at the Ceramics Ultra).</p><p>Bluetooth really has stepped up over the years. Stay safe, and stay metal.</p>