The Kramer Ferrington is an Acoustic Guitar used by Kurt Cobain.

The Kramer Ferrington guitar, debuting in 1986 and designed by luthier Danny Ferrington, represents an intriguing blend of acoustic and electric features aimed at exploring a softer side of hard rock. Known as the KFS-1, this model is characterized by its Strat-like body shape, constructed from maple for the top, back, and sides, and features a thick D-shaped neck made of maple with a rosewood fingerboard. The neck has a scale length of 25.5 inches, a nut width of 1-5/8 inches, and a fingerboard radius that ranges from 12 to 20 inches. Notable for its aggressive styling typical of Kramer guitars, the KFS-1 also includes an off-round sound hole and an under-saddle pickup, equipped with an onboard 2-band EQ.