YOB-441M
System Simplified Conservatoire (semi-automatic octave system)
Key System Identical to models without the 'M' suffix
Mechanical Features Left-hand F key, Fork F resonance key, Low Bb key
Trill Keys C#-D#, F#-G#, Ab-Bb, A#-B, B-C#, left C-D, right C-D
Pads 8 cork, 15 felt pads
Body Material Grenadilla Insert injected ABS resin (upper joint)
Key Material Silver-plated nickel silver keys
Tone Holes ABS resin (except metal octave vents, upper joint only)