The revolutionary new 40 Series features Larrivee's "Scalloped Parabolic Hybrid" bracing design. They blended a non-symmetrical scalloped lateral cross-bracing pattern with our tried and true balanced X-Brace system. This means maximum strength using the least amount of material. It's a build that allows even further vibration of the soundboard, while still offering a controlled dynamic bass response. Like all Larrivée's, the 40 Series is built in America using only all solid wood and features brand new upgrades like bone nut and saddle, diamond fingerboard dots, and 18:1 open-back tuners. Larrivée's revolutionary new bracing design means a robust and unique tone that is sure to appeal to traditional and long-time Larrivée players alike.