True Temperament AB

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True Temperament AB is a Swedish innovation company based in Trollhättan, specializing in unique fretboard designs and fretting systems for guitars. Founded by guitarist Anders Thidell around 2004-2005, the company emerged from his desire to improve guitar intonation. Thidell developed a custom system featuring curved frets, which led to the creation of the Thidell Formula 1 (TF1) in partnership with guitar builder Paul Guy. This system has been recognized as a significant advancement in guitar making. True Temperament offers patented TT-frets and complete fretboards that utilize curved, non-parallel frets to enhance intonation across the entire fretboard. Their products include retrofit necks for existing guitars, complete TT fretboards, and custom shop conversions for professional instruments. The company has gained popularity among renowned guitarists and has established partnerships with major guitar brands, integrating their technology into factory models. Retailer Thomann also features True Temperament necks, highlighting the company's commitment to improving guitar performance.