I would like to find a compact device that could attach to an existing pedal. It would provide a wet dry mix ( maybe on a dual concentric pot ? ) for older mono guitar pedals such as MXR Phaser or Flanger etc. Essentially the input would be split to provide a direct to the pedal input and a dry output with a gain circuit - then route the pedal effect output into the device and be able to mix the balance. I have several vintage / great sounding pedals but i think their effect level are mixed too strong and I'd like to be able to mix back the effect level. Does this sound possible with a splitter and mini clean gain circuit?. Maybe route the 9v power into this unit and parallel off for the pedal power. something that could essentially hang off the input jack.