The Ortofon Reference Interconnect cables Series is designed and manufactured by Ortofon Japan. The Reference Black is a reference audio cable par excellence with a well-balanced, neutral and precise sound.

Signal conductors are made of PCUHD (Pure Copper Ultra High Durability) in combination with 6N High Purity Copper and 4N HiFC (High performance pure copper). The result is a well-balanced, neutral and precise sound.
Two bundles, each of 4 different kinds of conductors run in parallel and are orientated in such a way that their internal structure are kept asymmetric with respect to each other.

① Signal conductors: PCUHD(Pure Copper Ultra High Durability) Ø 0.32 mm × 7
② Signal conductors:
  • 6N copper Ø 0.18 mm × 4 and
  • Silver plated 3N copper Ø 0.18 mm × 16
③ Signal conductors: Silver plated 3N copper Ø 0.12 mm × 30
④ Signal conductors: HiFC (High performance pure copper) Ø 0.08 mm × 49
⑤ Signal conductors: PCUHD(Pure Copper Ultra High Durability) Ø 0.32 mm × 7
⑥ Signal conductors:
 • 6N copper Ø 0.18 mm × 4 and 
 • Silver plated 3N copper Ø 0.18 mm × 16
⑦ Signal conductors: Silver plated 3N copper Ø 0.12 mm × 30
⑧ Signal conductors: HiFC (High performance pure copper) Ø 0.08 mm × 49
⑨ Damping material: Cotton fiber
⑩ Shield: Aluminuim tape
⑪ Shield: Braided wire 4N OFC (Oxygen-free copper) Ø 0.12 mm × 8 × 24
⑫ Insulation: Halogen-free highly resilient elastomer
⑬ Insulation: Braided nylon fiber
⑭ Cable diameter: Ø 10 mm
⑮ Insulation: PE (Polyethylene)