thanks guys. I have noticed to that if i go from the grand piano to another ss that has a pad or strings and back to the piano ss, i will get a surge. this is all with the SS's that came with the piano, nothing i have touched. But i'll try zipping. thanks for the info on that. I'm glad to see others are experiencing that. I was starting to think it was just me. against thanks for taking the time to help me. paul