Is it possible to plug the speaker/headphone output of a soundcard into an external effects pedal? Or would there be signal level/impedance problems? Could I damage anything this way? The soundcard I have is a Midiman Delta 66, so I've got plenty of inputs and outputs which take quarter inch plugs. Mostly interested in seeing how different effects units (whether on or off) affect the bass's tone, and figured the easiest way would be to record one sound clip to use as a constant reference point, and then run and record it going through each of the effects in turn..