The YOB-831 offers a 'European' style bore configuration for a focused, pure sound full of rich colors. This inner bore shape is complemented by tapered tone-holes with carefully matched undercutting for accurate intonation and a balanced response. The comfortable amount of back-pressure allows use of free blowing reeds for a wide range of tonal expressions. The keys have been ergonomically re-shaped for optimum comfort and playability while the lever action is carefully regulated to facilitate technique.

Handworked keys
Skilled artisans braze and adjust all keys on Yamaha oboes by hand to optimize the balance of each individual instrument

Newly designed, highly polished bore
Excellent intonation, tonal balance, and resistance

Hand-tapered, undercut tone holes
Precise, even intonation and response

Nickel-silver bell ring
Increases effective density of the bell for improved response and tone

Level		Custom
Key of		C
Key System		Full Conservatoire
Bore Style		European
Octave Keys		Semi-Automatic
Mechanical Features		3rd Octave key; Left-hand F key; Fork F resonance key
Upper joint material		Grenadilla
Lower joint material		Grenadilla
Bell Material		Grenadilla
Key Material		Nickel Silver
Plating		Silver
Tone Holes		Undercut with innovative uppercuts
Thumb Rest		Fixed
Trill Keys		Low B - C# ; low C - Db ; C# - D# ; D# - E ; F# - G# ; G# - A ; Ab - Bb; A# - B ; B - C# ; left C - D ; right C - D
Spring Type		Blue Steel
Cork		20
Pads		3