 Guitar techs for the most famous international guitarists such as Jimmy Page or Tony Iommi can become minor celebrities within the guitar fan community because of their proximity to famous musicians and insider knowledge of how a certain guitarist's unique tone is created.Guitar technicians must have a broad knowledge of the musical equipment used in the types of bands they work with.At a minimum, this must consist of familiarity with setting up and tuning guitars and making simple adjustments and repairs.