The Martin D-16GT dreadnought acoustic guitar is a blend of classic and modern, and a part of the 16 Series, which focuses on marrying updated specs and playability with the iconic Martin sound. With a glossy solid sitka spruce top (GT stands for Gloss Top) and mahogany for its back and sides, the D-16GT has a pretty typical composition for a dreadnought, though the guitar has been produced in a variety of tonewood combinations, as well as a few different potential electronic options, if that's your thing.