Courtois AC131 Prestige Alto
Eb dual-bore alto trombone · professional · current
Rich, bright, fluid and precise; eases the tenor-to-alto transition for orchestral soloists
| Type | alto |
|---|---|
| Key | Eb |
| Bore class | dual |
| Bore size | .464/.492″ |
| Valve configuration | Straight (no valve) |
| Bell diameter | 7.28″ |
| Bell material | rose/gold brass |
| Bell construction | one piece |
| Slide | yellow brass outer slide and slide crook, hard-crown-plated nickel silver inner slide |
| Leadpipe | interchangeable |
| Finish | clear lacquer |
| Level | professional |
| Era | current |
| Country | France |
Features: Gold brass bell and main tuning slide; interchangeable leadpipes. Straight (AC131R) or optional trill rotor / trill-key tuning slide (AC131BR) â kept as one model with the trill rotor noted as an option.
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