ALVA
Analog Multicore Cable
8 x XLR female <> 8 x stereo jack

An audio multicore cable (often colloquially referred to in the US and Canada as a snake cable or just a snake) is a thick cable which contains from four to 64 individual audio cables inside a common, sturdy outer jacket. 
Audio multicore cables are widely used whenever multiple audio signals, for example from a number of microphones, need to be conveyed between common locations. Typical professional audio applications include audio recording, sound reinforcement, PA systems and broadcasting. The “snake” is typically used to make it easier to route many signals from the microphones or other input transducers, to the audio console or sound equipment.