Dreadnought with Solid Sitka Spruce Top and Solid Mahogany Back/Sides. The Recording King RD-10 is the first of its kind. A solid spruce top and solid mahogany back and sides make it the best all-solid guitar value available. Simple and minimally appointed but designed from the same plans as all of our Classic Series guitars, the RD-10 delivers the rich, warm sound Recording King is known for. Case not included.