There are two configurations of guitar amplifiers: combination ("combo") amplifiers, which include an amplifier and anywhere from one to four speakers in a wooden cabinet; and the standalone amplifier (often called a "head" or "amp head"), which does not include a speaker, but rather passes the signal to a speaker cabinet or "cab".
The banjo is a four or five stringed instrument with a piece of plastic or animal skin stretched over a circular frame. Simpler forms of the instrument were fashioned by enslaved Africans in Colonial America, adapted from several African instruments of the same basic design.
The guitar consists of a body with a rigid neck to which the strings, generally six in number, are attached. Guitars are traditionally constructed of various woods and strung with animal gut or, more recently, with either nylon or steel strings. Some modern guitars are made of polycarbonate materials. Guitars are made and repaired by luthiers.
A mandolin (Italian: mandolino) is a musical instrument in the lute family (plucked, or strummed). It descends from the mandore, a soprano member of the lute family. The mandolin soundboard (the top) comes in many shapes—but generally round or teardrop-shaped, sometimes with scrolls or other projections.
The ukulele originated in the 19th century as a Hawaiian interpretation of the cavaquinho or braguinha and the rajao, small guitar-like instruments taken to Hawaiʻi by Portuguese immigrants.[3] It gained great popularity elsewhere in the United States during the early 20th century, and from there spread internationally.
