Live transmissions of sporting events or concerts set special requirements for microphone cables: low microphone levels of under 100 mV must often be transmitted over hundreds of metres into the mixer. CORDIAL developed the CMK 250 type for this purpose, whose great conductor cross section of 0.50 mm² guarantees a low loss in quality. Thanks to its fine stranding of thin Cu wires, the cable is highly flexible, can be used with a cable reel and is efficiently protected against interference.