CablePhile 9 series interconnect cable C9A is the flagship interconnect cable. It is composed of the Ultra Pure OCC sliver conductor spiraling with Air tube, excellent insulation materials include FEP，PTFE which are defined as the best audio cable insulation materials, dual metal shielding materials include SPC and Cu-Mylar, the red cooper terminal which plated 30um sliver directly,cold-welded,accurate CNC and also did strict anti-oxidation treatment. It is totally good at the consistency,physical structure,none chemical aging, none mechanical aging,greater absorption of RF/EMI. The performance of C9A is super wide frequency extension, smoothing, amazing bass frequency with accurate，extremely revealing of subtle high-frequency detail,even no noise floor.