Gibson J-45

A 1967 Gibson J-45 Guitar.
Manufacturer	Gibson
Period	1942-present
Body type	dreadnought
Neck joint	Dovetail
Body	Sitka Spruce top Mahogany back and sides
Neck	Mahogany
Fretboard	Rosewood
Bridge	Rosewood
Natural, Heritage Cherry Sunburst, Vintage Sunburst

The Gibson J-45 is an acoustic guitar model manufactured by the Gibson Guitar Corporation. It is part of Gibson's round-shoulder, dreadnought acoustic "jumbo" line, begun in 1934 with the Gibson Jumbo Flattop which was to compete with C.F. Martin & Company's "D" line.

The J-45 is generally regarded as Gibson's most famous and widely used acoustic guitar model. Introduced in 1942 with a list price of $45, it was conceived as a replacement for the earlier J-35 model, which was an inexpensive, Great Depression-era flattop guitar. The J-45 initially varied only slightly from the discontinued J-35. Some of the changes were internal, such as strengthened bracing, while exterior changes included the new teardrop-shaped pickguard, and a decal with the Gibson logo replacing the old stark white 'Gibson' silkscreen logo of the thirties, and the slogan "Only a Gibson Is Good Enough." The J-45 also had a more rounded, "baseball bat" style neck, as opposed to the "V" shape of the J-35 neck. Introduced during World War II, the J-45 standardized Gibson's approach to the dreadnought guitar. The J-45 produced by Gibson today is substantially similar to the 1942 model.

Cosmetically, the J-45 was understated, intended as a durable no-frills "workhorse guitar" (its nickname given by the manufacturer). The binding was simple, the soundhole ring was austere, and the neck sported modest dot-shaped mother of pearl fretboard position markers. Gibson typically used the sunburst finish to cover up imperfections in the wood used on instruments, since it made the majority of the top of the guitar black. The J-45 was constructed of solid spruce wood for the top, while solid mahogany (as opposed to laminated) was used for the back and sides. In the intervening years though, the Gibson sunburst has become iconic to the degree that collectors prefer the J-45 to the higher end J-50s of the same era. Apart from a small batch of natural-finish J-45s produced in 1942, the model was offered only in the sunburst finish. The J-45 is known for its warm bass sound and good projection, as well as outstanding playability.