Yamaha TRBX504 4/4 electric bass guitarIntroducing the Yamaha TRBX504 4 4 electric bass guitar With a perfectly balanced, ultra comfortable solid mahogany body provides the optimum tonal foundation, while the performance EQ active circuitry gives instant access to perfectly dialled in stage ready tones, with all of the expressive control you need. Top quality materials The TRBX504 sculpted solid mahogany body, with a mass optimized 3D design for the optimum balance between tone and comfort