Fx loop issue

And that's the best version I did. Using stero jacks for send/return and stereo cables to may keep the signal ground and shielding to chass apart.

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I did also a shield only protection for the mono ends jacks at the pedal in/out

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Is almost noise free, less sensitive wiring to external noise I can get.
 
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Are all the pedals true pop bypass? I mean true bypass

That is usually the problem.
No buffered soft switching pedals to test?

I thoroughly ignored the theory of true pop bypass and often removed it.
No " tone sucking" myths that only effected some very rare old pnp germanium pedals.
Even the fuzz face had a different switching application, no popping or tone sucking.
Most of it myth
 
Thanks for reply. I have only couple of true bypass pedals on hand so I cannot confirm for anything else. Second, I don't have a proper earthing at the moment so the amp chass is floating. The pedals was supplied by batteries to avoid any loop. The coupling noise I talking about is something more you can feel than it can be heard but still it vary for certain position of run cables in the room. But still coming at the beginning of the post, the switching pop is present. It is quiet but is there, no matter what I did. But in the end I can be happy with my last version of wiring as "good enough" please...I running out of ideeas
 
...what can I tell more is the level of switching pop noise seems dependent by the size of CF output capacitor for same output 100k load.. 10uF capacitor is way more loud than 1uF for instance. It is EMI interference ? Who knows...? The size of the caps diference is not so dramatic and both was mounted same in respect with outer foil.

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