The principles of the NX bore shape, bell and register key design, along with a logical (and unusual) choice of bore size (12.8mm), justify calling these the first truly in tune Eb and D clarinets, significantly addressing the usual problems of the flat altissimo register, sharp high C region and sharp middle low register.
In addition to superior intonation, they have been praised by all who have tried them for their clear, smooth tone and excellent projection.
A conventional Eb clarinet mouthpiece is used. Keywork is Boehm system with the addition of an automatic register/throat Bb mechanism.
For customers wishing an
extra pitch boost for the altissimo E-F region, an automatic
tuning key is offered.