Features: • Utilizes Valentino pads which offer less pad deformation and adjustment • New Duet Technology offers outstanding resistance to cracking • Made of Grenadilla Wood • Featuring Nickel Silver keys • 2nd register vent tube for better clarity in the 2nd register • Comes with sturdy zip bag and 4C mouthpiece • Key: Bb   DUET+ TREATMENT Yamaha clarinets have achieved sound quality and superb intonation by dramatically improving precision and stability. Also to cope with various quality issues inherent in wooden instruments. Duet+ models employ innovative techniques to form a protective layer next to the air column. The combination of precious wood and state-of-the-art resin is not simply a “Duet” of tradition and technology – it’s a “Plus” advantage indeed.This innovative technology, which premiered with our oboes, has been brought to the clarinet after extensive engineering specific to the instrument. The upper joint body is drilled out slightly larger around the bore and tone-holes. Thermoplastic ABS resin is injected into the cavity, instantly forming the inner shape of a clarinet. It is designed to preserve as much virtue of traditional clarinets as possible, while its natural appearance is hardly distinguishable from conventional all-wooden models.