Ranko Acoustics, which started with cables, has launched various types of cables and related accessories over the years. In addition to headphone cables and signal cables, they have also introduced USB cables and accessories in the digital era. In order to improve playback performance, they have developed their own patented UIF (USB Impurity Filtering Technology) to enhance the accuracy of digital transmission and improve rectification power supply. They have also applied their 6N OCC high-purity single crystal copper wire. In addition to the RUF-1000 and RUF-100 cables tested this time, there is also the RUF-XC, which is specifically designed to eliminate and handle power supply noise for mobile phones, allowing mobile phone users to enjoy high-level playback.

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