The Sigma OMRC-1ST-SB utilizes a solid sitka spruce top with rosewood back & sides to produce a rich & resonant tonality whilst the addition of the impressive Fishman ISYS+ electronic pickup system allows accurate reproduction of the OMRC-1ST-SBs awesome tone. Also featuring a mahogany neck with 20 fret rosewood fingerboard black pickguard rosewood bridge & bone string nut & saddle the Sigma OMRC-1ST-SB is a great sounding smooth playing & affordable electro acoustic guitar.