A special type of construction of mic and line cable using two pairs (but NOT individually twisted or shielded) rather than two conductors. Canare cable, the owner of the trade mark, claims this type of construction provides greater interference rejection, and less induced noise. However, the jury is still out: see the thread http://www.controlbooth.com/forums/...nd-better-help-me-find-out-results-usitt.html .
http://www.canare.com/UploadedDocuments/Cat11_p35.pdf
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