Korpa 
The Sigma JRC-40E is a six-stringed acoustic guitar with a built-in Fishman pickup system. The J-14 Fret body of the jumbo-sized instrument provides the same elaborate shape and classic tonewoods as the American-made original. Large mother of pearl inlays, a tortoise pickguard as well as a noble high gloss finish complete the great look of the acoustic guitar.
The SIGMA brand was launched in 1970, and have since established an excellent, even legendary, reputation. Some models were said to be of outstanding quality, both, in construction and sound. SIGMA acoustics are built by specially trained staff in the most efficient guitar factories in Japan and then sent to the US for inspection before being released for sale and shipping to the music stores. Most owners still swear by their instruments and would never part with them.
