Apple
Node quality is engine node quality — mean across evidenced axes; spec-and-review derived. Node quality is spec-and-review derived; treat small differences between neighbouring components as directional rather than exact.
| Component | Role | Node quality | Chains (of 120) |
|---|---|---|---|
| AirPlay 2 (network input) | Digital source | — | — |
| Mac mini -> USB (Apple Music) | Digital source | — | — |
2 components; unscored rows carry no evidenced axes yet.