ah no it doesn't do that!! this thread gave me some motivation to sort it actually, turns out I had too much gain causing a massive uncontrolled feedback, tweaked it a bit today and its sounding like a nice little delay/flanger now!! I'm sure some noise freek would love the feedback potential it has though, it doesn't need a guitar input, you just ramp up the gain and it sings to itself while you play with the occilation rate and feedback level!!