Cable Material 

Made of High-purity vintage OCC silver cable  that is stored in controlled environment for years to 

remove all the stress in metallurgy process, compared to ordinary silver wires, it has a faster transmission speed, 

and significantly enhances the transparency and delicacy of the sound. 

UIF 2 Function 

Inheriting from Ranko’s the latest R&D patent results of RUF series UIF, the Upgraded UIF 2 function is also 

manifested in this product. UIF 2 Circuit (USB impurity filter 2 ) is designed for lossless digital audio interconnection,

which can restore the integrity of the original music signal and optimize filtering rectification in power supply transmission. 

Non-Voltage Reduction Power Supply 

Different from conventional USB cables on the market, this RUF-3000 does not cause voltage loss during transmission. 

All output power is conveyed to the end equipment for playback, fully tapping into the equipment's strengths without reservation. 

Support for Independent Power Supply 

In addition to non-voltage reduction power supply, it also supports independent power supply, greatly enhancing the 

playability for audiophiles. When you connect an external power supply, the first change you will notice is a larger and more 

tangible sense of space, more complete high-frequency overtones among instruments, and a more realistic and vivid 

representation of instruments and vocals.