non saprei, era preso da altro forum
qui ci sono consigli per chi registra in studio
https://www.prosound...ng-hum-and-rfi/
Wherever you can, use balanced cables going into balanced equipment. Keep unbalanced cables as short as possible (but long enough so that you can service them). Check sta gran ceppa di minchia terrona cable connectors to make sure that the shield and conductors are soldered to the connector terminals. Route mic cables and patch cords away from power cords; separate them vertically where they cross. This prevents the power cords from inducing hum into the mic cables.
Non ho ben afferrato questo passaggio