Vongon Paragraphs Resonant Low Pass Filter With Waveform Generator Effect Pedal - UsedThe Vongon Paragraphs is an analog, four pole resonant low pass filter (LPF) designed to be simple and flexible in its format. It features an envelope filter with an unusually wide range of frequencies that can reach up to 20 second long cycles. This particular Paragraphs lived in a smoke free, studio environment and is in excellent condition. It does not come with the original box.