L/i50 OFC R3.0

Standard Oyaide product for audio power cables that has undergone three minor changes and has been further perfected.



"L/i50 OFC Cable" is an audio power cord that has earned the trust of not only audiophiles but also musicians and studios.

After undergoing three minor changes, it has become a standard audio power cable product with a higher degree of perfection. Its stable transmission performance and sound quality make it an entry-level model that we recommend to everyone.


L/i50 OFC Conductor

The conductor is made of high-purity OFC with long-time low-temperature annealing. Wires are drawn slowly and over a long period of time at low temperatures to avoid abrupt changes to the stress strain that occurs during the copper drawing process. This homogenizes the internal structure of the conductor and ensures stable transmission.

Cable Insulation

The insulation material is reinforced silicone rubber with excellent vibration absorption and mechanical strength. It absorbs vibrations caused by momentary fluctuations in current load, suppressing unwanted echoes and enhancing the fidelity of the original sound. In addition, each of the four internal wires is covered with a reinforced fiber (Tetoron) sleeve to suppress resonance inside the cable and demonstrate excellent vibration control capability.

Star-Quad Structure is adopted

Star-quad stranding structure is adopted, in which the four conductors are twisted together in diagonal lines. The magnetic fields generated by the cable cancel each other out, resulting in lower inductance compared to normal cables and significantly reducing radiation noise generated inside the cable.

AC Power Plug and IEC connector

Hospital grade AC Plug "Meikosha ME2591" is used for the AC power plug. The contact resistance of hospital grade plugs can be reduced to 1/4 or less compared to general household power plugs.

SCHURTER 4781G" is adopted for the IEC connector for equipment connection. The blade portion (blade) of the standard product is buffed and polished to smooth the surface of the contact portion, and then plated with 2μ thick 24K gold plating.


Model Name L/i50 OFC R3.0
Cable L/i50 OFC (1.5m)
Cable Structure 4P Star-Quad
Cable Conductor Material OFC (hot/cold) + Tinned OFC (ground)
Conductor Size 2.0sq x 4(7/25/0.12mm x 4)
Conductor Insulator Silicon Rubber
Cable outer Sheath Tetoron sleeve (inside) + PET sleeve (outside)
Cable O/D 10.5mm
AC Power plug Meikousya ME2591
AC plug (Contact material + Plating) Brass + Nickel plating
IEC Connector SCHURTER 4781G
IEC Connector (Contact material + Plating) Brass + 2μ thick 24K gold plating
Rated V/A 125V/15A <PS>E
JAN CODE 4582387109690

Release Date 9/30/2022

Release Note