The Lumanoise V4 has 4 trautonium-like sub-oscillators. T Master oscillator under LDR control and 4 sub-oscillators were used, where you can set the division frequency of the T Master Oscillator Divider. Each oscillator has a volume pot. It's possible to connect an external LDR, a pot, a variable resistor or a high / mid / low switch for the T Master oscillator range. The filter cut-off of the 12 db low pass resonant filter can be controlled by the potentiometer or the photoresistor.