So what about impedances? I´ve mentioned it already with the Jim-Dunlop/Vox Clyde Comparison and now visualized a few Input impedances with my trusted GiSi-Simulator (Written by Ulf "Der Onkel" Schaedla from Hamburg/Germany in Excel) on a generic guitar-circuit (Pickup, Volume, Tone, Cable, Input Impedance).
Also note that although the level will go up in case of your series-resistor, it will also go down a bit since the loading of the pickup...
They also contribute to how much high´s will be present.
Blue: 1MΩ, Dunlop Buffer, original Resonance of direct-to-amp is preserved
Green: 100kΩ, Colorsound-Wah
Red: 78kΩ, Input-Resistor Vintage Cry-Baby/Vox, a bit too large due to parts-tolerance of ±20%
Brown: 68kΩ Input-Resistor Vintage Cry-Baby/Vox, on spec
Orange: 60kΩ Input-Resistor Vintage Cry-Baby/Vox, a bit too small due to parts-tolerance of ±20%
Pink: 56kΩ Input Resistor, intentionally lowered to get more level after removing the buffer in your cry-baby for true-bypass and reading further on the stink foot page

Purple1: 47kΩ Input-Resistor, Maestro Boomerang or lowered even more to get even more signal after true bypass mod
Mint: 39kΩ Input Resistor, Fulltone Clyde Wah Standard or lowered to get way more signal after true bypass mod
Purple2: 27kΩ Input Resistor, see Schaller Bow-Wow-Yoy-Yoy-Schematic (first resistor to ground)
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