By and large most connections for a sound system are fairly standardized. The wiring for these connections is very standardized.
For each purpose, there is a proper connection. When it comes to sound systems, the fewer connection points you have, the better off you are. With every connection point comes an opportunity for noise and failure. So, by minimizing the number of connections you have in a sound system you increase your odds of good performance. You also simplify troubleshooting when something does go wrong.
Sound systems have two primary groups of connections: Signal Level (Mic Level and Line Level) and Powered Level (Speaker Level).
Signal Level connections are high- or low-impedance connections, ...