- bass guitars
- electric guitars
Ken Wittman is a builder of electric and bass guitars. He also developed the Spinstrap system designed to alleviate problems caused by heavy instruments and traditional straps. The Wittman ProTuner is another of his inventions - it has an LED display inlaid in the side of the neck or in the upper horn area, so it is visible to the player only.
Source: Wittman website (archived 2003)