The POLYVOX PF3 is a double-stereo filter module featuring two independent 12dB multi-mode filters that can be controlled by a single cutoff knob. Turning the filter into a 24dB filter, when connected in series. When connected in stereo, you can achieve interesting effects by using different modes to each channel. A noise generator is on board pre-filter and can be used separately as a source of white and pink noise. Volume as well as clean and processed signal balance per channel. Can be used as two independent filters or stereo mode.

WARNING! Before using the device, turn it on for 5-7 minutes and let it stand. The control transistor should warm up. If you overdo it. The UD1208 chips used in the filter are very sensitive and are never the same. Therefore you will not mathematically get two identical filters. Which is an advantage when using the unit in stereo.