Gear Up for Accurate Pitch Courtesy of Gotoh When it's time to upgrade or replace your prized axe's tuning heads, SD91 tuners by Gotoh will serve you well for years to come. SD91 tuners are manufactured in Japan by experts who draw on Gotoh's decades of hardware expertise. Dozens of manufacturers in Sweetwater's network trust Gotoh tuners, so you can, too. SD91 tuners feature a 15:1 gear ratio and vintage-style metal construction, including zinc buttons with metal posts. Put guitar projects on the path to accurate pitch and performance with high-quality Gotoh hardware from Sweetwater.Gotoh: Japan's leading hardware purveyor since 1960 Founded in 1960, Gotoh reigns as Japan's perpetual champion of machine head manufacturing. The company's seeds were planted in 1950 when Masao Gotoh's research lab began producing strings for violins. Mid-century disruptions in music technology prompted a pivot to guitar hardware, and by 1960, Gotoh was ascendant in the