Letshuoer - Cadenza 12 vs Moondrop - Aria 2

The Cadenza 12 edges ahead on the Mars Score (70.1 vs 65.4), but the 4.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.

Pick the Cadenza 12 if you care most about impedance and driver count. The biggest gaps in its favor are impedance, driver count.

Pick the Aria 2 if you care most about sensitivity. Its strongest claims are sensitivity.

Both ship with comparable detachable cable, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.