Bias; Noise - SoundToys little radiator 1566A User Manual

THE LITTLE RADIATOR CONTROL PANEL
Little Radiator — Version 5

BIAS

The Bias switch selects between two subtly different styles of distortion
based from saturation characteristics observed in different 1566A units.
Bias set to "ON" is the more distorted of the two modes. Keeping the
Bias control set to "OFF" results in a more accurate simulation of a
pristine hardware unit, and has gentler saturation characteristics.
NOISE SWITCH
The 1566A has a significant amount of circuit noise even at low
saturation levels and we decided to model and include this noise for
Little Radiator. However, you can eliminate this modeled circuit noise by
switching the Noise switch to the down (disengaged) position.
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