It’s use 20 AWG high purity OCC Solid core balance conductor with air insulation. Has triple shielded to reduce noise. Combined with special design pure copper RCA plugs and terminated with unique silver solder, that will make FOS-20i can deliver the best sound quality posible.
FOS-20i.10 : 1 meter length (pair)
FOS-20i.30 : 3 meter length (pair)
FOS-20i.50 : 5 meter length (pair)