Rath R400 Bb/F tenor tromboneThe Rath R00 series of trombones bridges the gap between student level instruments and our custom, modular, hand crafted instruments. Everything that Michael Rath knows about designing and producing trombones has been utilized in creating a series of trombones that are elegant in their simplicity yet economically attainable. Weve taken the most successful modular combinations for the Rath R10, R4F and R9 models and created a range of non modular