Microphone Cable Specifications

SC-Square 4-Core MKII "Star Quad" Microphone Cable manufactured by Sommer Cable in Germany

The sound director calls the tune and Sommer Cable responds...

The SC-Square 4-Core MKII "Star Quad" is a top microphone cable with great magnetic immunity.

When star-quad cable is used for a single balanced line, such as professional audio applications, two non-adjacent conductors are terminated together at both ends of the cable, and the other two conductors are also terminated together. Interference picked up by the cable arrives as a virtually perfect common mode signal, which is easily removed by a coupling (Audio) transformer or differential amplifier commonly found in mixing consoles, pre-amplifiers and power amplifiers. The combined benefits of twisting, differential signalling, and quadrupole pattern give outstanding noise immunity, especially advantageous for low signal level applications such as long microphone cables, even when installed very close to a power cable.

A dense helical copper mesh screen and an additional metallised fleece foil ensure superior protection. Because of its sophisticated design this cable is also frequently found in discerning hifi studios where it flatters the ear with a homogenous and linear sound image. If you don’t want to compromise on sound or “electrical” things whether playing live or in the studio then the SC-Square 4-Core MKII "Star Quad" microphone cable is for you!


  • Extremely noise-free due to the crossover connection of the 4 single wires
  • Suitable as a phantom power supply and stereo cable due to its 2 extra conductors
  • Very good transmission safety and linear sound transmission
  • Extremely robust and good tensile strength due to the thick PVC jacket
  • 100 % shielding owing to dense helical copper mesh screen plus additional metallised fleece foil


  • Professional studio and microphone technology
  • Connection of effects and control units which require a return signal
  • Professional MIDI-technology, transfer cable
  • High-end connection of hifi components

Technical Specifications:

  • SC-Square 4-Core MKII "Star Quad" Analog Microphone Cable
  • OFC oxygen free copper
  • Application Installation / Mobile outdoor / indoor / Stage / live
  • Construction: (4LI2Y0,20mm²)(ST)DY
  • Jacket material: PVC
  • Jacket Ø [mm] 6.50
  • Number of Channels (audio) 1
  • Inner conductor (audio) 4
  • Inner conductor (audio) [mm²] 0.20
  • Inner conductor Ø (audio) [mm] 0.50
  • AWG (audio) 24
  • Shielding: Copper spiral shielding tin-plated + conductive fleece-foil
  • Copper strands (audio) 102
  • Copper strand Ø (audio) [mm] 0.05
  • Conductor insulation material: PE
  • Weight per 1 m [g] 53
  • UV-resistant: yes
  • Fire load per m [kWh] 0.22
  • Style variant: round
  • Shielding factor [%] 100
  • Temperature min. [°C] -25
  • Temperature max. [°C] 70
  • Width [mm] 6.5
  • Height [mm] 6.5
  • Capacitance: conductor/conductor per 1 m (audio) [pF] 65
  • Capacitance: wire/wire at 1 ft. (audio) [pF] 19.812
  • Capacitance: conductor/shield per 1 m (audio) [pF] 120
  • Capacitance: wire/electic screen at 1 ft. (audio) [pF] 36.576
  • Impedance [Ω] 95
  • Insulation resistance per 1 km [GΩ] 0.2
  • Insulation resistance per 1000 feet [GΩ] 0.061
  • Insulation resistance per 1 km (audio) [GΩ] 0.2
  • Insulation resistance per 1000 feet (audio) [GΩ] 0.061
  • Conductor resistance per 1 km [Ω] 98
  • Conductor resistance per 1000 ft. [Ω] 29.8704
  • Shield resistance per 1 km [Ω] 20
  • Shield resistance per 1000 ft. [Ω] 6.096