Eastman Guitars' Slope Shoulder dreadnought formula, which includes all solid spruce and sapele tone woods for powerful sonic coverage enhanced by scalloped X-bracing, is used in the E1SS acoustic guitar. The E1SS's satin-finished mahogany neck, which is fitted with an ebony fretboard for strong articulation and transitional control, evokes fluid motions along the fretboard. Moreover, Eastman has used a variety of nickel hardware and open-gear tuning machinery to enhance the security and aesthetics of the instrument, making it deserving of any dreadnought enthusiast or budding musician.