9-Pin to 9-pin FireWire cableFast, reliable data transferIdeal for producers, musicians, sound engineers, sound designers the high-performance and stability they need for next level sound production.The conductor of the d+ FireWire series is made of "Silver-coating OFC (Oxygen-Free Copper)" in order to actualize hi-speed data transmission. And, the combination of double shielding, twist-pair structure, and TPE outer sheath protects signals from the external noise contamination and electro-magnetic interference.In order to make sure high-performance serial bus, “Silver-coating OFC (Oxygen-Free Copper)” is employed for its conductor material. By coating silver which has about 5% lower resistance than copper has and its skin effect, it actualize hi-speed transmission and doesn’ t lose sound details and dynamics.The impedance matching is calibrated by exact pitches for accurate data transmission and excellent stability. The combination of double shielding, twist-pair structure, and TPE outer sheath protects signals from the external noise contamination and electro-magnetic interference.By 24K gold plated bronze alloy contacts, it maintains durability and transmission stability for a long time.The body of the connectors made of 30% glass filled PBT and aluminum outer cover are employed for hi-speed vibration attenuation property. And this will help to stabilize the clock operation at bus-powered for lossless sound recording and playing.