Here's my signal path: Guitars | Samson Concert IV wireless | Morley Bad Horsie 2 wah | Boss CS-3 compressor | Voodoo Labs Preamp | Morley Little Alligator volume pedal | Boss DD-3 digital delay | Electro-Harmonix Holy Grail reverb | MXR Smart Gate noise gate | Marshall SV-1 Supervibe chorus | | (SV-1 left & right outputs) Mesa/Boogie 20/20 | | (20/20 left & right inputs) Avatar 2x12 speaker cabinet (stereo) Here's my problem: I love the Marshall chorus (it's exactly what I want in a chorus pedal). But since I've introduced it to my signal path (putting it last to take advantage of the stereo outs in place of a y-cable) I've encountered a feedback-like squeal in certain circumstances, either when volume gets beyond a certain point -- say 3 or 4 -- or if the gain gets a little higher. So, I backed off both a bit, but the sound man wants me to run a bit higher volume. It's set now just below where I'll get the whine, but now I can't use the wah pedal because it sets off the whine. It boosts the signal just enough to get that noise going. I had a distortion pedal after the compressor. It made the thing scream like there was no tomorrow. Oh yeah, I'm powering the pedals with 2 Visual Sound 1-spots, but I've tried the Marshall with a battery to see if that helped. It didn't. I hope I've described it adequately. If not, please let me know. What do you think? Also, general signal path suggestions will be appreciated.