This model is freeblowing with a multitude of tone colours. It features a semi-automatic system with thumbplate.
The PT. C1 S6 is constructed from Grenadilla Ebony which has been seasoned for 11-13 years. This model features silverplated keywork with the following additional keys: double F key (left hand F), double low C key, 3rd octave key, forked F resonance key, low C to C# and low B to C# trill keys, C to Eb trill, C to E trill ring, Ab-Bb trill key, independent connection from low B to low C.
- Double F key (left hand F)
- Double low C key
- 3rd octave key
- Forked F resonance key
- Low C to C# and low B to C# trill keys
- C to Eb trill
- C to E trill ring
- Ab-Bb trill key
- Independent connection from low B to low C