Studio 49 Soprano Xylophone Mallets - S5The sound quality your instrument produces is highly dependent on the mallet you choose. In general, soft mallets produce more fundamental pitch and less overtone; hard mallets produce less fundamental pitch and more overtone. Large bars require proportionately larger mallet head. for soprano xylophones with Rosewood bars series 1600 2000 plastic head length approx. 32 cm (12 in)