Pedal as preamp?

[zeeway]

So, the guitar in question has a passive HFN Schatten sbt mounted pickup, and is a bit prone to feedback and be a bit bass-heavy. It seems to calm down when I connect it to an amp through a TC Helicon Harmony Singer pedal. Is there any pre-amp kind of magic happening here because of that pedal, or is it just my imagination (running away with me)?

[swarfrat]

All the SBT piezos are picky about not seeing too high an input impedance. Excessive bass is the symptom