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Why are high-end audio cables made of single crystal copper
Why do high-end wires often use single crystal copper as conductive wire cores, and what is the difference between them and oxygen free copper.
The main differences are as follows:
1、 Different purities
OFC (oxygen free copper): Copper with a purity greater than 99.95%, an oxygen content not exceeding 0.003%, and a total impurity content not exceeding 0.05%.
OCC (Monocrystalline Copper): Single crystalline copper with a purity of over 99.996%, manufactured using the "high-temperature hot casting mode continuous casting method".
Single crystal copper is further divided into sub categories such as PC-OCC and UP-OCC.
2、 Different structures
Single crystal copper is a type of high-purity oxygen free copper, in which the entire copper rod is composed of only one grain and there is no "grain boundary" generated between the grains (the "grain boundary" will reflect and refract the passing signal, causing signal distortion and attenuation).
Oxygen free copper is pure copper that does not contain oxygen or any residual deoxidizers.
The characteristics of single crystal copper:
1. The purity of single crystal copper reaches 99.9999%;
2. The resistance is 8% to 13% lower than that of ordinary copper materials;
3. High toughness, ordinary copper can break after 16 turns of twisting, and single crystal copper can twist 116 turns.
Such advantages make single crystal copper products a material for producing high fidelity audio and video signals, high-frequency digital signal transmission cables, and ultra-fine wires used in the microelectronics industry. They can be used in fields such as mobile phones, audio systems, and computers, resulting in better performance, smaller size, and longer lifespan of microelectronic devices.
Single crystal copper is very popular in the audiovisual industry due to its excellent conductivity and conductivity.
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