Guitar:

Historically, Kluson tuners haven’t been exactly celebrated for their tuning reliability, and given Patrick Gigliotti’s claim of increased tuning stability some were suspicious. I yanked on the strings, bent them without mercy, and mangled them in all directions for nearly two weeks, and I only needed to tune the guitar three times: the first was when I received it from shipping; the second was when tuning the low E string to D, and the third was retuning the G string one time.