You have to hand it to Electro-Harmonix not only do they create some of the most inspiring effects pedals on the planet they also produce and encourage fans to produce demos that are absolutely stunning and show you exactly what the sonic capabilities are of each product. Just check out the Riddle Envelope Filter demo above and the Enigma Envelope Filter pedal below (Bass version).

These pedals look like a lot of fun although it is probably more useful in a studio situation where you can fiddle with the knobs on playback.

For more info head over to EHX.com