so i got me a dBA Robot, still very expensive at $230, but hey, i always wanted to make bleeping noises. anyway, the thing doesn't make a sound when chained to another pedal. it does have a sound when bypassed, ruling out patch cable problems ... and it sounds the way it does when it is the only pedal (without anything else on it apart from the bass and amp). chain it with another pedal, it turns into a mute switch! help! nothing seems to be wrong inside it though ... does anyone have any idea why this is so?