Why doesn Rotel use balanced connections?
Balanced connections began in the professional sound reinforcement and music recording industry where three conductors (signal, inverse signal, and ground) helped avoid the noise problems inherent in single-ended (signal and ground only) connections. These noise problems usually arise when single ended cables run for long distances where the cable itself can act as an antenna for radio frequency or electromagnetic interference (RFI and EMI, respectively). In contrast, balanced (or three conductor) connections can resist what’s called common mode noise more effectively because these noise elements are eliminated when the signal and inverse signal conductors are summed. In most domestic home theater and hi-fi systems, these noise problems are not typical and balanced connections add extra – and most likely unnecessary – cost. Do not confuse balanced connections with differential circuitry. True differential circuitry, with separate signal and inverse signal paths inside a component, sign
