Stiffness was not up to our specifications for Adirondack Spruce nor ended up these soundboards as acoustically Stay. Despite the good look, we couldn't in very good conscience marketplace this spruce as Adirondack/Crimson Spuce. Substantially in the spruce from these areas is both White Spruce or perhaps a Purple/Black/White hybrid. https://thomaso654yma9.wikimillions.com/user