Balanced Vs. Unbalanced Cables (What’s the Difference?)
What is the difference?
An unbalanced audio path has two conductors. One carries the audio signal and the other is the shield/ground. There is nothing at all wrong with an unbalanced signal but at times can be susceptible to picking up interference from radio frequencies or electromagnetic fields that cause noise and buzz.
A balanced signal has three conductors. It relies on a sum and difference principal.