Fender Guitars
There are several at variance fret gauges, which can be fitted according to animal preference. Among these http://www.jhguitars.com/ are "jumbo" frets, which have much thicker gauge, allowing for use of a slight vibrato technique from pushing the string down harder and softer. "Scalloped" fretboards, where the thicket of the fretboard itself is "scooped out" between the frets allows a melodramatic vibrato effect. Fine frets, much flatter, allow a very low string-action but require other conditions such as curvature of the neck to be well maintained in order to foil buzz
Seven-strings were popularized in the 1980s and 1990s in chip due to the release of the Ibanez Universe guitar, endorsed by Steve Vai. Other artists go a step further, by using an 8 string guitar with two extra low strings. Although the most colloquial 7-string deadbeat a crouched B string, Roger McGuinn (of The Byrds and Rickenbacker) uses an octave G string paired with the regular G string as on a 12 string guitar, allowing him to incorporate chiming 12 string no-frills in standard 6 string playing.
