Thanks for the response! For the record, I did have all the devices, amps and G10, in the same power strip. Also, one amp is tube, a Blues Jr, and the other a Line 6 Amplifi. Same result on both. Because of this I had assumed it was a wrong or bad cable. The cable you listed is the cable I have in the 10 foot length. Looks like the cable is a dud. Time to try another cable. Thanks again...