The Hering Golden Blow Custom, like the Hering Blues Custom, is part of the Hering Custom Shop series. It was designed for ultimate comfort and performance levels. Each one was tested in the factory by a trained technician. It is an impressive harp that is meant for a musician who likes to overdraw, overblow, and generally put his or her harmonica through a rigorous workout. However, in order to get the Hering Golden Blow Custom to perform exactly how you want it to, you may need to adjust the reeds. They also may need replacement eventually, as any reeds do when they are pushed to their limits.