Ranko Acoustics 2.5 mm rhodium and silver-plated balance plug.  Optimized structure designed.  

Apply single crystal copper-silver alloy conductor. Covered with high quality insulator. 

Avoid contact impedance and make the loss of media to a very low level.   shell High-quality brass shell with black fine sandblasting treatment. 

Matte texture. Good shock protection and anti-noise function makes the audio signal more accurate and stable. Nearly lossless in transmission.