Ranko Acoustics rhodium and gold-plated copper and silver alloy.  High conduct designed.  

Dramatically improved the appeal of the HIFI.  Covered with high-quality insulators.  

Avoid contact impedance and make the loss of media to a very low level. 

High-quality brass shell plus black fine sandblasting treatment. Matte texture. 

The high quality damping protection and anti-jamming function makes the audio signal more accurate and stable. 

Nearly lossless in transmission.