SS03 Bow The SS03 is the mid-level model in Symphonia’s student bow range. It is available for violin and cello and is intended for developing students moving on from an entry-level bow. Options Select Violin or Cello. Choosing a model The SS02 is the entry-level model. The SS04 is the higher-grade model in the student range. If you are unsure which instrument or model is suitable, contact info@symphoniamusic.co.nz.