Name Extended - range bass is family of guitars which include bass guitars which has a wider frequency range than other standard tuned four-string bass guitars

Wikidata Item (Q2887371)

Developed in: In 1956 by Dance Electro developed the first 6 string bass 

External Link -

https://en.wikipedia.org/wiki/Extended-range_bass

https://www.bajaao.com/products/ibanez-sr306eb-6-string-bass-guitar-jatoba-fretboard-weathered-black?variant=13024750534728&gclid=CjwKCAiA58fvBRAzEiwAQW-hzcCcsjhciXhFmH5-O4kYe0t2Sodsd_wsHb1AHwrBoEadM-wdMZNU4hoCYYkQAvD_BwE

Disambiguation: 12 string guitar
Description: A modern twist to the bass guitar, allowing the guitarist to switch between the general 4 octaves to a wide variety of frequencies. It was made popular by Doug Pinnick of King's X when he used a 6 string bass guitar in his concerts