Sugden
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 60) |
|---|---|---|---|
| Sapphire DAP-800 | Preamplifier | 76.8 | — |
| A21 Signature | Integrated amplifier | 73.4 | 1 |
| ANV 50 | Integrated amplifier | 73.4 | 4 |
| IA-4 | Integrated amplifier | 73.2 | — |
| Sapphire FBA-800 | Power amplifier | 72.9 | — |
| Masterclass PA-4 MM/MC | Phono stage | 72.3 | — |
| Masterclass LA-4 | Preamplifier | 72.0 | — |
| A21 SE | Integrated amplifier | 71.7 | — |
| Masterclass SPA-4 | Power amplifier | 71.4 | — |
| Masterclass MPA-4 (pair) | Monoblocks | 71.3 | — |
| Masterclass DAC-4 | DAC | — | — |
11 components; unscored rows carry no evidenced axes yet.