Ranko Acoustics 0.78mm 24K gold-plated pin. Optimized structural designed.   

Apply high purity phosphorus bronze as conductor. Accurate wire diameter. 

Covered with high quality insulator. Avoid contact impedance and reduce the loss of the medium to very low level.  

Choose high quality brass shell. Good shock protection ability and prevent impurities. 

Thus make audio signal more accurate and stable. Nearly lossless in transmission.