Part of Martin's 2018 re-imagined Standard Series, the HD-28 Ambertone has been given vintage-inspired touches like open gear tuners, and antique white binding. Other updated features include forward shifted X bracing and a Modified Low Oval neck shape. It still offers the classic combination of Sitka spruce and East Indian rosewood, all wrapped in Martin's signature herringbone purfling, Ambertone top finish, and the dreadnought body size kicks out powerful lows and rich tone..