Haven’t tried the G70 but I’m surprised. The G90 and X70/75 didn’t have that issue.I currently am using the Shure ULX and love it. It doesn't mess with your tone at all as long as you have the gain levels on the unit set correctly. Before it I was using a Line 6 G70 and was never happy with it. It's built like a tank but I could always here and feel a difference in tone between it and a cable.