Dobro 55/56 brown stain resonator guitar, 7573 with case. A resonator guitar is a type of guitar that is the same size and shape of a standard acoustic guitar, except it has a metal speaker built into it. Dimensions: (guitar): 38"l x 14"w; (case): 40"l x 15"w x 5"h. Processing and shipping within the continental U.S $135 plus a 1.5% replacement cost insurance fee. Discounts given on combined lot shipping. Scattered wear, please see photos.