The whole rod/wire is only made from one grain, there are not any grain boundaries, It is mainly used to make Hi-Fi A/V cables, and It has been accepted that the single crystal copper is the ideal conductor of Hi-Fi cables by more and more people of the Hi-Fi world. The cables made of Single Crystal Copper, Its background of tone quality is quiet , The timber is exquisite and sweet. The distinguish of sound effects between high frequency band and low frequency band is clearly, the diaphaneity, bloom, ambience, and space perception of the sound are excellent, These cables have come to the best quality of world standard wires, and thousands of Hi-Fi lovers are keen on them.