# Aggregated bills of materials

| File | Module |
|------|--------|
| [`lm3886_poweramp_BOM.csv`](lm3886_poweramp_BOM.csv) | LM3886 Class-AB amp |
| [`active_crossover_BOM.csv`](active_crossover_BOM.csv) | LR4 crossover + ±15 V PSU |
| [`tpa3255_classd_BOM.csv`](tpa3255_classd_BOM.csv) | TPA3255 filter / decoupling |

Canonical copies also live under each module’s `docs/BOM.csv`. Prefer the module folder when editing; refresh these copies when freezing an order.