Hope to hear your expert advise on the following: (maybe already handled extensively - thanks for referring me to the thread): I observe a ticking noise (+/- 5 to 10 Hz), polluting the sound when the guitar is connected. Apart from working with a noise gate I want to find the origin and work the issue. I test with an empty preset with only gain stage (around 30 dB - then the noise is clearly heard). in unconnected mode (cable connected to the Helix - not connected to guitar) the noise is not present. The effect is reduced when setting "guitar in pad" to "on" in global settings/IN. The effect is heard with different guitars (HB - Single coil) at different intensity. Using a Power Filter (Furman AC-210 A) does not help. Does anyone recognises this? What can be the reason? How to get rid of this without compromising sound quality?