The instruments have been set up at the factory. However, time, temperature, and transportation are a few of the many things that can cause a guitar to go out of "intonation". We recommend that you get your new guitar set up by a qualified luthier upon delivery. We recommend taking it to a qualified guitar tech for a set up. They will adjust the neck and bridge to take out the buzzing. We ensure that before shipment there is no evident of fret buzz before shipment and the guitar plays beautifully since our professional guitar technicians inspect each instrument by hand, then perform a full, and precision setup. All brand new guitars need proper setup after shipment to suit your personal preference that would strongly correlate to your playing style. We believe that your Local Guitar Shop can properly and safely adjust the truss rod and setup the guitar correctly for issues of fret buzz and bow neck. Truss rod adjustments are made to alter the straightness (flatness) of the neck. Truss rods often require adjusting when temperature and humidity change the amount of bow in the neck. Weather, specifically temperature and humidity, may have a dramatic impact on the way your instrument plays. All instrument woods expand and contract with seasonal actuations in temperature and humidity, and naturally, string height and playing action are affected. The neck needs a simple truss rod adjustment to correct any problems like fret buzz and bow neck which can be easily done by guitar experts. And also, you may adjust the bar of bridge. Please be advised that guitar necks are crafted from wood, and they will sometimes shift during shipping and as the temperature/humidity/elevation changes. An important part of maintaining your guitar is knowing how to adjust the truss rod. When a guitar experiences temperature and humidity swings, such as when seasons change, it can develop a slight bow in the neck that results in a guitar that plays buzzy or is suddenly much harder to fret. If this situation occurs, you can often correct the problem simply by tightening or loosening the truss rod.