The Eastman MD504 is a traditional oval-hole A-style mandolin. Each MD504 is individually hand-built using traditional materials and "Old World" craftsmanship. This popular mandolin includes a strong spruce leading with a solid maple back and sides. It's rounded out with an adjustable ebony and an ebony fingerboard bridge. The Eastman MD504 A-style Mandolin provides a warmer tone with less bite and even more sustain however with lots of bark when you need it.