Coda Specialized Joule 4/4 Violin Bow (Extended Range) Joule The Most Innovative Of All The Codabows, The Joule Evokes A Performance Unattainable With Traditional Materials. Originally Developed Exclusively For Extended Range And Electric Instruments, This Breakthrough Design Is Capable Of Commanding Power From The Lwoe Range While Still Finessing Color And Nuance From The Upper Range. Compelling On Both Extended Range And Traditional Instruments, The Joule Possesses An Empowering Energy