Yamaha TRB1004J, finished in Natural, delivers a new 4-string version of the monster TRB range of electric bass guitars. Yamaha TRB1004J Natural was born originally as a versatile 6-string electric bass guitar to counter the greater involvement of synthesizers in music in end of 1980s. The all new TRB1004 now extends that line down to the 4-string level and makes for a very attractive and gutsy bass with a massive sound and tonal quality for further improvisation and expression.