The top is carefully selected Solid Sitka Spruce for great tone that actually sounds better with age. Fishman Presys pickup system The Fishman Presys preamp and Sonicore pickup on the MR710F-12 provides a poweful and versatile output ready for your amp or PA system. 12 strings version of MR710F MR series offers a variety version of guitar tone and one of them is 12 strings version which allows you to feel the deep and full tone.