The Animal Factory Amplification Orobas is a dual tube amplifier that is composed of two identical channels which can be used in parallel or in series.
The Screen CV input determines the gain and the sound characteristics.
The Suppress CV input is normalized to the input signal if nothing is connected. The purpose of this input is to direct electrons reflected from the anode back to the anode. Audio Rate Modulation is also possible here and a bit milder than with the Screen CV, but still effective.
The Evocation knob controls the feedback of the second output into the first channel. The sonic performance is very much dependent on the Plate Bias switch. The Plate Bias switch effectively controls the headroom. This allows you to use the tubes in three different settings, from fuzz sound to full distortion.
In this video, we show the Orobas in various situations, as a VCA for monophonic synth sound and chords or as a distortion for beats from a drum machine.
