For nearly four decades, BOSS has led the industry in tuning technology, making this essential task easier and more convenient for everyone. Renowned for their accuracy, durability, and ease of use, BOSS tuners are used every day by guitarists, bassists, and other musicians around the world, in bedrooms and music classrooms to small clubs and the biggest concert stages.
In 1983, BOSS introduced the TU-12, the world's first automatic chromatic tuner. We take it completely for granted these days, but a hands-free tuner that sensed and displayed the pitch of the note you were playing was truly revolutionary at the time. The TU-12 came with an accuracy of +/- 1 cent—that's 1/100th of a semitone. With most humans only able to discern tonal differences of 5 cents and above, that's quite literally more accurate than your ear!
The combination of LED and traditional needle displays meant that the TU-12 was extremely quick and responsive to showing subtle changes in tuning. Along with a 1/4-inch input for directly connecting electronic instruments, it also had a built-in condenser microphone for tuning acoustic instruments. During its 25-year tenure, its world-class tuning and practical, portable size made it a top choice not only for musicians and music educators, but luthiers and instrument techs as well.