 Guitar techs learn their craft either "on the job", by working in a range of music, sound engineering, and instrument repair jobs; by completing a guitar repair program at a college or lutherie school; or from a combination of these two routes.The salaries and conditions of work for guitar techs vary widely, depending on whether a guitar tech is working for a minor or regional touring bar band or a major international touring act.The duties of a guitar technician depend on the type of band they are working for, and on a range of other factors such as the size and nature of the stage show and the length of the show.