Send Message

What is the difference between OFC copper and OCC copper? 

June 20, 2024

When it comes to high-quality audio cables, copper wire selection can significantly impact performance and overall sound quality. Ruiyuan offers a range of options, including oxygen-free copper (OFC) wire and high-purity Ohno Continuous Cast (OCC) copper wire, as well as OCC silver wire, designed specifically for high-end audio applications. Understanding the differences between OFC and OCC copper is critical to making an informed decision when choosing the right material for your audio needs.


OFC copper is known for its high conductivity and relatively low cost compared to other high-end copper options. It is produced by melting blister copper, then casting it into ingots, and then removing oxygen and other impurities through an electrolysis process. This gives the copper material an electrical conductivity of at least 99.95%. OFC copper's high conductivity makes it an excellent choice for audio applications, as it allows for efficient signal transmission with minimal losses.


OCC copper, on the other hand, is known for its exceptional purity and crystal structure. The OCC process involves single crystallization, where copper is melted and then slowly cooled to form a single crystal structure. This method eliminates the grain boundaries found in traditional copper, resulting in a material with excellent electrical conductivity and signal transmission capabilities. OCC copper typically has a minimum conductivity of 99.99%, making it ideal for high-end audio cables that require superior performance.


In terms of applications, OFC copper is widely used in various audio cables, including speaker wires, interconnect wires, and power cords. Its combination of high conductivity and cost-effectiveness makes it a popular choice for consumer and professional audio equipment. OCC copper, on the other hand, is typically reserved for high-end audio applications that require the highest performance. Its exceptional purity and crystal structure make it particularly suitable for audiophile-grade speaker cables, interconnects, and other critical audio connections.


In summary, both OFC and OCC copper offer unique advantages for audio applications. OFC copper offers excellent conductivity at a relatively affordable price, while OCC copper sets a higher standard with its superior purity and crystal structure, making it the first choice among high-end audio enthusiasts and professionals. Understanding the differences between these two materials is critical to selecting the correct copper wire to achieve the performance required in your audio system. With OFC and OCC copper cables provided by Ruiyuan, audio enthusiasts can make informed decisions to take their listening experience to new heights.