This term refers to the ability for a guitar to get in proper tune and to hold the tuning while being played. Most inexpensive factory guitars made in Korea, Mexico, or China will have cheap guitar tuners that won’t hold a tuning very well. They are also set up according to factory standards that are a compromise at best. Better-constructed guitars are setup and tuned individually before they ever make it to the music store. Look for the following brands of tuners: Grover, Schaller, Gotoh, and Waverly. Several large guitar builders such as Martin, Taylor, and Gibson have their own names on their tuners. The quality of these are generally very good but their lower-end models usually have poorer quality tuners.