This classic tuner has been the industry standard for many years and for good reason. The TU-12 is a quick and accurate tuner with a highly visible display which makes it a nice choice for onstage use. The compact size allows for easy positioning on those pedalboards with limited real estate. As with most Chromatic tuners, the unit automatically detects the note being played, displays it, and shows it’s tuning status. The tuning range is well suited for most instruments and you can make minute adjustments to allow for concert pitches.The plastic case and display screen tends to take a beating on a well used pedalboard but a few slight cracks and dings hasn’t stopped ours from working perfectly all these years. To top it off, Boss added a very sensitive built-in condenser mike for those non-electric players out there.