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 120) |
|---|---|---|---|
| Sapphire FBA-800 | Power amplifier | 76.0 | — |
| IA-4 | Integrated amplifier | 72.7 | — |
| A21 Signature | Integrated amplifier | 71.7 | — |
| ANV 50 | Integrated amplifier | 71.6 | 9 |
| A21 SE | Integrated amplifier | 71.5 | — |
| Sapphire DAP-800 | Preamplifier | 71.5 | — |
| Masterclass LA-4 | Preamplifier | 70.7 | — |
| Masterclass SPA-4 | Power amplifier | 70.5 | — |
| Masterclass MPA-4 (pair) | Monoblocks | 70.0 | 1 |
| Masterclass PA-4 MM/MC | Phono stage | 66.7 | — |
| Masterclass DAC-4 | DAC | — | — |
11 components; unscored rows carry no evidenced axes yet.