If you work in the professional audio field, you need to use balanced lines for long signal runs to prevent hum and noise pick-up. This Balanced/Unbalanced Converter is really two projects in one. It ...

Balanced (differential) audio is carried as a differential signal on two wires, with no ground reference. This offers high common mode noise rejection. Unbalanced (single ended) signals are carried by ...

Baluns enable impedance matching, minimize signal distortion, and suppress common-mode noise in RF and high-frequency designs ...

In Part 1 of this series on audio fundamentals (“Let’s Talk About Some Basics of Audio for Radio”), we discussed audio problems and how to handle audio transformers. Most of today’s studios don’t need ...

XLR is three pronged and eliminates some of the buzzing of RCA, that's all I know, although I'm interested in the topic.