Not for speaker wire I wouldn't think, but it can carry balanced audio very well - people make converters to XLR or jacks that carry four balanced signals over

Not for speaker wire I wouldn't think, but it can carry balanced audio very well - people make converters to XLR or jacks that carry four balanced signals over a single CAT6 cable (using the shield also for ground). Given it's pretty close to the right impedance it can carry microphone or line level balanced audio very well. It's a bit humorous to think audiophiles might be spending thousands of dollars on speaker cables to listen stuff that could have passed through literally $5 cables in the studio.