Experiment with a variety of sounds with the Electro Harmonix Q-Tron Plus envelope filter with effects loop pedal. This envelope filter pedal features the same design as the original Q-Tron, but includes an attack response switch and effects loop for greater versatility.
Use this filter to add an additional chain effect to music without changing the envelope drive. Get creative when experimenting with this Q-Tron Plus envelope filter by distorting some of your favourite tracks or combining different sounds in the effects loop. You can also use this filter to invent a completely new sound. The added response switch lets you select between a slow, smooth vowel-like attack or a fast, snaked response.