Sonor Axpo alto xylophone - tonal range: C1-A2, C major scale with F sharp1, B flat1 and F sharp2. 16 bars, fundamental tuning, palisono bars (38 x 15mm), pine resonator, includes mallets (1 pair of SCH 11). Palisono is a fiberglass enforced material, that was developed by Sonor in co-operation with specialists in composite fabrics. The sound characteristics of Palisono make it ideally suited for the manufacturing of xylophones. A main feature of Palisono is its resistance against humiditiy and temperature changes thus ensuring perfect pitch and durable tuning quality.