Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Letshuoer - Cadenza 12 | ThieAudio - Monarch MKIII |
|---|---|---|
| Sensitivity | 105 dB | 112 dB |
| Impedance | 16 Ω | 22 Ω |
| Driver count | 12 | 10 |
Between the Cadenza 12 and Monarch MKIII, the Cadenza 12 comes out ahead in impedance / driver count, while the Monarch MKIII wins on sensitivity. Overall, the Cadenza 12 scores 70.1 and the Monarch MKIII scores 72.9 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (70.1 vs 72.9). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Cadenza 12 if you care most about impedance / driver count. The biggest gaps in its favor are impedance, driver count. The single most decisive one: Impedance — 6.00 Ω less. 16 vs 22.
Pick the Monarch MKIII if you care most about sensitivity. Its strongest claims are sensitivity. The single most decisive one: Sensitivity — 6.67% more. 112 dB vs 105 dB.
Both ship with comparable detachable cable, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: Letshuoer - Cadenza 12 or ThieAudio - Monarch MKIII?
ThieAudio - Monarch MKIII leads the current Mars Score by 2.8 points.The more useful decision is the trade-off behind that result: compare driver count, impedance, sensitivity against the way you will actually use the product.
Choose Letshuoer - Cadenza 12 if…
Letshuoer - Cadenza 12 has the measurable edge on impedance ohm, driver count.
Choose ThieAudio - Monarch MKIII if…
ThieAudio - Monarch MKIII has the measurable edge on sensitivity db.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why Letshuoer - Cadenza 12 wins
- ▲Impedance — 6.00 Ω less. 16 vs 22.
- ▲Driver count — 2.00 more. 12 vs 10.
Why ThieAudio - Monarch MKIII wins
- ▲Sensitivity — 6.67% more. 112 dB vs 105 dB.
Spec comparison
Drivers
| Spec | Letshuoer - Cadenza 12 | ThieAudio - Monarch MKIII |
|---|---|---|
| Driver count | 12lead | 10 |
| Driver types | 1DD + 8BA + 2EST + 1BC Tetrabrid | 1DD + 6BA + 2EST + 1 Bone Conduction Tribrid |
| Impedanceⓘ | 16 Ωlead | 22 Ω |
| Sensitivityⓘ | 105 dB | 112 dBlead |
Build
| Spec | Letshuoer - Cadenza 12 | ThieAudio - Monarch MKIII |
|---|---|---|
| Detachable cable | true | true |
| Connector | 0.78mm 2-pinlead | 2-pin |