"OFC" is an abbreviation for the English "Oxygen Free Copper". It is well known that gold and silver have the lowest electrical resistivity and the best electrical conductivity. However, if gold or silver is used as the material for the fever line, the price is very expensive, which is not acceptable to most enthusiasts. As a commonly used metal material, copper has good electrical conductivity and is commonly used. However, copper contains many impurities, most of which are oxides, thus affecting the conductivity of copper. The "OFC" line of the intelligent fever line is a high-tech method such as electrochemical method, PN junction implantation method, isotope irradiation modification method, etc., which changes the metal structure of copper to make the surface of the copper wire unique. The metal structure makes the surface of the same copper wire suitable for transmitting frequency signals above 5000Hz, and its center is only suitable for transmitting frequency signals below 5000Hz, so that the high and low frequencies do not interfere with each other, which is beneficial to improve when transmitting large signals. The sharpness of the reproduced sound is improved, and the sound quality of the reproduced sound is improved.
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