This performance enhanced ca. 1970s Ernst Heinrich Roth 3/4 carved back bass has had a n umber of performance enhancement procedures to bring it up to professional level performance in jazz or orchestral settings. The top was regraduated and bass bar remodeled. The neck was reset and a new aged African ebony fingerboard installed. A New Harmony endpin was installed and Jason Brown performed a comprehensive hybrid setup that is useful in jazz or orchestral settings. The top has even grain structure and a complex tap tone. The flame figured German maple back and sides also have complex tap tones. The German maple neck is somewhat more plain in figure. The original halfplate tuning machines are in great shape and turn smoothly. The new nut and fingerboard are of aged African ebony. The tailpiece and tailpiece saddle are also of aged African ebony. The Aubert De Luxe bridge has had adjusters added and has a final height of 7 1/8″. The orange varnish finish shows very little playing wear to the edges. There are no repaired cracks on the entire bass. Currently strung with Thomastik Spirocore orchestra gauge strings. Dimensions are: Top length 42 1/2″, Upper bout width 19 3/4″, Middle bout width 14 5/8″, Lower bout width 25 3/4″, Rib depth at tail 7 7/8″, Rib depth at upper bout crease 7 7/8″, Rib depth at neck 6 5/8″, String length 41 3/4″. This easy playing instrument has a strong and projective voice in either jazz or orchestral settings. A very nice advanced student of professional gigging bass. With cover.