The bit One HD Virtuoso software provides a series of Parametric / Paragrafic equalizers to be managed on screen which, with extreme versatility, provide for an optimal calibration of the audio system. The user can operate on the equalization of the Master or AUX analog inputs by choosing the “Input EQ” option, on the single output channels equalization by selecting the “Channels EQ” option and operate on the whole system equalization by choosing the “Main EQ” option. Thanks to the active Pop Up menu it is possible to intervene in a more precise and accurate way on all the available intervention points, working full-screen on the equalizers using all the control commands.