increase the physical volume of the soundbox without making it deeper at the edges, which would affect comfort and playability. The result is a very balanced tone, comparable to the 00 but with greater volume and dynamic range and slightly more low-end response, making this Classically shaped body style very popular. Eric Clapton's signature Martin, for example, is of this style. Martin's 000-xxx series and Taylor's x14 series are well-known examples of the grand auditorium style. The dreadnought is a large-bodied guitar which incorporates a deeper soundbox, but a smaller and less-pronounced upper bout than most styles. Its size and power gave rise to its name, from the most formidable class of warship at the time of its creation in the early 20th century. The style was designed by Martin Guitars to produce a deeper sound than "classic"-style guitars, with very resonant bass. Its body's combination of compact profile with a deep sound has since been copied by virtually every major steel-string luthier, making it the most popular body type. Martin's "D" series guitars, such as the highly prized D-28, are classic examples of the dreadnought. The jumbo body type is bigger again than a grand auditorium but similarly proportioned, and is generally designed to provide a deep tone similar to a dreadnought's. It was designed by Gibson to compete with the dreadnought, but with maximum resonant space for greater volume and sustain. These come at the expense of being oversized, with a very deep sounding box, and thus somewhat more difficult to play. The foremost example of the style is the Gibson J-200, but like the dreadnought, most guitar manufacturers have at least one jumbo model. Any of these body type can incorporate a cutaway, where a section of the upper bout below the neck is scalloped out. This allows for easier access to the frets located atop the soundbox, at the expense of reduced soundbox volume and altered bracing, which can affect the resonant qualities and resulting tone of the instrument. All of these relatively traditional looking and constructed instruments are commonly referred to as flattop guitars. All are commonly used in popular music genres, including rock, blues, country, and folk. Other styles of guitar which enjoy moderate popularity, generally in more specific genres, include: The archtop, which incorporates an arched, violin-like top either carved out of solid wood or heat-pressed using laminations. It usually has violin style