This is an ongoing problem period! It has absolutely nothing to do with going through the front of a dirty amp or not! Besides these were meant to go before amps anyway and don’t particulary sound that much better in the effects loop section of an amp, let alone cancelling out any pops or clicks.

EHX was started in the early days when effects were being used more and more. Ie: Jimi Hendrix, The Beatles, Deep Purple etc etc. A certain amount of noise was either acceptable or simply put up with back then, given the present state of technology at the time. These are not $200 to $300 high end boutique pedals. Maybe thats why they are not modified to eliminate noise like more expensive pedals.

The effects sounds with EHX pedals are awesome however and that is why they still sell. Some musicians probably use some noise cancelling device-which is more bullshit and another unnecessary pedal to have in a chain. EHX simply ought to upgrade their product range with moden electronics!