The acoustic piccolo bass is usually tuned in fourths , E2 - A2 - D3 - G3 .
Ron Carter often uses A1 - D2 - G2 - C3 .
The acoustic piccolo bass is usually tuned in fourths , E2 - A2 - D3 - G3 , although Ron Carter often uses A1 - D2 - G2 - C3 .