SONOR SSM10 Soprano Metallophone represents the Meisterklasse pinnacle of SONOR's SMART Series — built for professional Orff ensembles and advanced school programs where tone quality and instrument longevity matter. Steel alloy bars are precision-tuned and mounted on a beechwood resonator box engineered to maximize sustain and projection. Meisterklasse quality steel alloy bars — rich, singing metallophone tone SMART Series beechwood resonator box for full, projecting sound Diatonic range: c2–a3 (15 bars) Removable bars — compatible with chromatic extension sets Highest quality bar mounting for secure, rattle-free performance German craftsmanship — SONOR, founded 1875 Meisterklasse — master class quality — the highest designation in SONOR's Orff instrument line. The SSM10 is a career-long instrument for the serious music educator or ensemble director.