A mixing console comprising: first and second input channels each input channel comprising receiving means arranged to receive a unique input signal; the first input channel comprising a first primary processing means for initially processing the first input signal and arranged to provide at least three first identical output signals; the second input channel comprising a second primary processing means for initially processing the second input signal and arranged to provide at least three second identical output signals; the console further comprising at least three output channels (G, H, I); the first output channel comprising at least a first and second secondary processing means, the first secondary processing means arranged to process and adjust the gain of the first output signal from the first input channel and produce a first tertiary output signal; the second secondary processing means arranged to process and adjust the gain of the first output signal from the second input channel and produce a second tertiary output signal; the second output channel comprising at least a third and fourth secondary processing means, the third secondary processing means arranged to process and adjust the gain of the second output signal from the first input channel and produce a third tertiary output signal; the fourth secondary processing means arranged to process and adjust the gain of the second output signal from the second input channel and produce a fourth tertiary output signal; each output channel (G, H, I) comprising a tertiary processing means (280, 290, 300), the tertiary processing means in the first output channel being arranged to combine, process and adjust the gain of the first and second tertiary output signals to produce a first auxiliary output mix; the tertiary processing means in the second output channel being arranged to combine, process and adjust the gain of the third and fourth tertiary output signals to produce a second auxiliary output mix; and the tertiary processing means in the third output channel being arranged to combine, process and adjust the gain of the third output from the first input channel and the third output from the second input channel to produce a master output mix; wherein the third output channel comprises fifth secondary processing means for processing and adjusting the gain of the third output from the first input channel and sixth secondary processing means for processing and adjusting the gain of the third output from the second input channel prior to their being combined and processed by the tertiary processing means, and wherein characteristics of the master output mix, the first auxiliary output mix and the second auxiliary output mix that relate to how each respective mix sounds as an audio output are all different from one another, and wherein the primary, secondary and tertiary processing means are configured to be able to independently, or in combination, apply processes selected from: band curve selection; band-pass equalization; compression; delaying; valve emulation; dual insert points; dynamic equalisation; dynamic reshaping; echoing; equalization; fading; four-band parametric equalization; gating; high-pass equalization; high-pass filtration; level fluctuating; levelling; low-pass filtering; low-pass equalization; mixing; notch filter equalization; panning; reshaping; reverberation; shelf equalization; single and multi-channel pre-setting; and summing. band curve selection; band-pass equalization; compression; delaying; valve emulation; dual insert points; dynamic equalisation; dynamic reshaping; echoing; equalization; fading; four-band parametric equalization; gating; high-pass equalization; high-pass filtration; level fluctuating; levelling; low-pass filtering; low-pass equalization; mixing; notch filter equalization; panning; reshaping; reverberation; shelf equalization; single and multi-channel pre-setting; and summing.