sg45SJM-SG45 EAN: 4260279937377. Body Size: D-14 Fret, Slope Shoulder Construction: Dovetail Neck Joint Top: Solid Adirondack Spruce (AA Grade) Back & Sides: Solid Mahogany Neck:Every SG 45 is equipped with a strain gauge snal input, an universal output and two relays. Optionally the tranmitter can be fitted with various interfaces.