Traditionally, luthiers made guitars to sell at a wide ranges of prices, largely based on the materials used and the amount of decorations, to cater to the popularity of the instrument across all classes of people in Spain. The cheapest guitars were often simple, basic instruments made from the less expensive woods such as cypress. Antonio de Torres, one of the most renowned luthiers, did not differentiate between flamenco and classical guitars. Only after Andrés Segovia and others popularized classical guitar music, did this distinction emerge.
The traditional flamenco guitar is made of Spanish cypress, sycamore, or rosewood for the back and sides, and spruce for the top. This (in the case of cypress and sycamore) accounts for its characteristic body color. Flamenco guitars are built lighter with thinner tops than classical guitars, which produces a "brighter" and more percussive sound quality. Builders also use less internal bracing to keep the top more percussively resonant. The top is typically made of either spruce or cedar, though other tone woods are used today. Volume has traditionally been very important for flamenco guitarists, as they must be heard over the sound of the dancers’ nailed shoes. To increase volume, harder woods, such as rosewood, can be used for the back and sides, with softer woods for the top.
In contrast to the classical guitar, the flamenco is often equipped with a tap plate (a golpeador), commonly made of plastic, similar to a pickguard, whose function is to protect the body of the guitar from the rhythmic finger taps, or golpes.
Originally, all guitars were made with wooden tuning pegs, that pass straight through the headstock, similar to those found on a lute, a violin or oud, as opposed to the modern classical-style guitars' geared tuning mechanisms.
"Flamenco negra" guitars are called "negra" after the darker of the harder woods used in their construction, similar materials to those of high-end classical guitars, such as rosewood or other dense tone woods. The harder materials increase volume and tonal range. A typical cypress flamenco guitar produces more treble and louder percussion than the more sonorous negra. These guitars strive to capture some of the sustain achieved by concert caliber classical guitars while retaining the volume and attack associated with flamenco.
Classical guitars are generally made with spruce or cedar tops and rosewood or mahogany backs and sides to enhance sustain. Flamenco guitars are generally made with spruce tops and cypress or sycamore for the backs and sides to enhance volume and emphasize the attack of the note. Nevertheless, other types of wood may be used for the back and sides, like rosewood, maple, koa, satinwood and caviuna.
A well-made flamenco guitar responds quickly, and typically has less sustain than a classical. This is desirable, since the flurry of notes that a good flamenco player can produce might sound muddy on a guitar with a big, lush, sustaining sound. The flamenco guitar’s sound is often described as percussive; it tends to be brighter, drier and more austere than a classical guitar. Some jazz and Latin guitarists like this punchy tonality, and some players have even discovered that these guitars’ wide-ranging sound also works well for the contrapuntal voicings of Renaissance and Baroque music.