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CHAPTER 
4
Introduction
ter position (12 o’clock) determines 
the volume of the filter section’s 
input signal. The portion of the 
control range located to the right 
of the center position (12 o’clock) 
does not achieve any increase in 
volume; it simply intensifies the 
degree of saturation or distortion. 
This effect is only achieved when 
you have activated a saturation 
curve. The intensity of the remain-
ing available DSP effects is also 
controlled via the OSC VOL knob.
Feel free to experiment with the 
diverse saturation curves and be 
sure to vary the OSC VOL settings. 
Note how the different CUTOFF 
and RESONANCE settings influence 
the saturation curve.
THE SECOND FILTER
You probably noticed that by a 
adding a bit of saturation to the 
signal you can come up with a 
pretty heavy, aggressive sound - 
especially with a low filter fre-
quency level and high resonance. 
You’re probably thinking these 
types of sounds could do with 
some more filtering. We had the 
same idea, which is one of the rea-
sons why we equipped the Virus 
with another filter per voice.