Electric bass guitar (usually called electric bass or bass only) is a stringed musical instrument that uses electricity to enlarge his voice. Its appearance is similar to an electric guitar but it has a larger body, longer neck, and usually has four strings (electric guitar has six strings).
Additional: The weight of the bass itself ideally heavier than regular electric guitar, because the strings are much thicker (to maintain humility tone / sound) so the cause must choose the wood that is more dense and harder to balance the pressure on the neck (neck guitar).
In addition, the size of the fret (the column on the guitar) that is greater, adjusted for the thickness of the strings.

There are many types of bass who used to date. The most widely used form of contra bass and cello bass (which is used for opera performances), electric bass (commonly used for all types of performances, especially the band) and fretless bass, electric bass the same but no fret (column / divider on the board press / neck) on the bass. The working principle is similar to contra fretless bass / cello bass just shaped electric guitar.
Strings and Tuning (Tuning)
Four strings Usually ditalakan to "GDAE", "GDAD", "GDGD", "DAEB", "FCGD" or "FCGC" Five strings Usually ditalakan to "GDAEB" but sometimes "CGDAE". Six strings Usually ditalakan to "CGDAEB" or "BGDAEB", although "EBGDAE" also like to use. Tuning the above sorted by number of strings (strings 1, strings 2, and so on), where string 1 is the lowest of bass guitar strings (the thinnest string).
Bass player chosen to use a bass with five strings or even six strings due to more wide range of tones that can be played. Six-stringed bass rarely used than the four-stringed bass and five-stringed bass. Usually, this six-stringed bass is widely used by jazz bassist wing, although not denied the player was rock-some are wearing it, because more and breadth of coverage of tones that can be played.