Double Bass, Graduate Series, Size: 1/4. The Stentor Graduate double bass is a great quality double bass outfit carved from solid tonewoods, with an enhanced flame finish that brings out the full appearance of the wood. With its solid spruce front and maple back and sides, the instrument produces a good resonant sound and full range of tone. The Stentor Graduate double bass is supplied with a good quality wood bow and padded protective cover with sturdy grab handles. Finish: Natural.SpecsSolid carved spruce frontMaple back and sidesEbony fingerboardFull plate brass machinesPadded rayon coverGood quality wood bow.