The SX90 Series soprano saxophones combine the legendary manufacturing of the Keilwerth brand along with the influence of legendary Keilwerth artist David Liebman. All models are based on an innovative new bore and bell design that offers less resistance with a centered tone and even pitch throughout the range of the instrument. All key work is produced entirely by hand to ensure the most accurate mechanism and precision.

The SX90DLS model is for those who appreciate the instrument presented exactly as used by the artist who has inspired it. Additional features include cork pads on all upper keys, including palm and register keys. The thumb rest is padded for added comfort during extended performance. All engraving is done by hand and has been designed by Dave Liebman including a hand engraved D.Liebman Signature on the bell. Accessories selected by the artist to accompany this model include swab, saxophone stand, and key clamps. This instrument is presented in an exclusive Signature Series case.