System: Conservatoire (semi-automatic octave system)
Bore style: American
Key systems: Identical to models without the 'L' suffix
Mechanical features: Left-hand F key, Fork F resonance key, Low Bb resonance (vent)
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
Pads: 9 cork, 14 felt pads
Body material: Grenadilla Ebonite Inner-pipe (upper joint)
Key materials: Silver-plated nickel silver keys
Toneholes: POM resin (except metal octave vents)
Options: With 3rd Octave Key (YOB-841LT)