The 512ce features back and sides of solid Urban Ironbark, a dense, hard tonewood that yields a rich, sophisticated response with a deep low end and high-fidelity voice reminiscent of Indian rosewood, along with some of mahogany's midrange punch and focus. The Grand Concert 512ce pairs Urban Ironbark with a torrefied Sitka spruce top, lending a played-in character that makes for a warm, piano-like sound with remarkable balance across the tonal spectrum.