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1990s Sigma by Martin SD-45J Dreadnought Acoustic Guitar w/ Case, Japan


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Up for sale, a 1990s Sigma by Martin SD-45J in exceptional, 100% original condition, complete with the original hardshell case. A very rare Martin model produced in Japan under the Sigma brand, the SD-45J replicates the feature set of one of Martin's most highly prized and highest tiered dreadnoughts, the D-45.

Featuring an X-braced spruce top, bookmatched Jacaranda (Bolivian rosewood) back and sides, a mahogany neck with a V-shaped profile carve and an ebony fingerboard and bridge, the SD-45J is an extremely well-crafted and tonally responsive instrument. Additional upscale features in-line with a D-45 include abalone hexagonal fretboard inlay, gold hardware, and abalone binding framing the top, back, rims, and soundhole. The instrument delivers clear, authoritative Martin square shoulder dreadnought tone with brilliant, crisp trebles and a round, defined bass register. The guitar has tons of power and projection, with a smooth growl on the wound strings when you dig in with a flatpick. This Sigma weighs 4lbs 14oz, professionally setup here at Mike & Mike's Guitar Bar with 12-54 strings and comfortable action.

The mahogany neck has a slender soft V-shaped profile carve, measuring .830" deep at the 1st fret and .915" at the 9th. The ebony fretboard retains the stock slender frets which have their full factory height, showing moderate uniform wear beneath the strings on the crowns of frets 1-2, with wear growing more faint beneath the plain strings until fret 5. The guitar plays cleanly up the 25.4" scale, and the neck is straight with a responsive, optimally adjusted truss rod. The nut measures 1 11/16" in width. On the headstock, the guitar features a rosewood veneer and what is referred to as Martin's "torch" inlay in some circles. The gold Martin-branded and Schaller-made tuning machines turn smoothly and hold pitch reliably.

On the body, the ebony bridge sits flush with the top, and the saddle has decent height. Cosmetic appointments include abalone binding framing the top, back and rims, and the soundhole is accented by a tortoise pickguard. The bookmatched Jacaranda on the back and sides is a multi-ply construction, purportedly marrying plies of mahogany and rosewood, a practice used on many Japanese acoustics to provide good tone and better strength, while reserving the most visually dynamic cuts for the outer ply, highlighted by a gloss finish. Cosmetic wear is limited to a few pinhead-sized nicks on top, and light scuffing in the clear coat of the gloss on the back. The satin finish on the neck profile is nigh flawless.

The original Martin-branded molded black hardshell case with blue plush interior is included.