In short, dBFS is the maximum level that can be introduced into a digital system without overload. I'm going to explain the differences between dBVU, dBFS, and how to convert from one to the other. dBVU Vs dBFS - ¿Cuál Es La Diferencia? Audioproduccion. dBVU is a 0 point set so that it allows a headroom of a certain number of dBs.