SONOR GBMP1-1 Deep Bass Metallophone anchors the Primary Series metallophone ensemble with profound, resonant low-register tone. Large-scale steel alloy bars and a beechwood resonator box deliver reliable deep bass metallophone performance for classroom Orff programs.
- Large-scale steel alloy bars — deep, resonant bass metallophone tone
- Beechwood resonator box for warm, projecting bass voice
- Primary Series — classroom durability and reliability
- Diatonic deep bass range
- Removable bars — compatible with GBMP2-1 chromatic extension set
- German craftsmanship — SONOR, founded 1875
Deep bass metallophone foundation for Primary Series Orff ensembles — warm, resonant, and classroom-ready.

