Hjärt Müller overdrive pedal was initially a drive pedal to bass, but the Tone control makes the pedal quite so flexible and you can adjust it so that it highlights more of the high register. The other knobs are Drive, Volume and Mix.
Mix is connected as a blend control where you have effect sound on one side and bypass (buffered) on the other side. The Drive control has also been selected so that the pedal has a large range and with Drive to the minimum, and Mix to wet, there is still very little overdrive. It can of course be pulled up and with Drive in max you are pretty good with Dist.
Hjärt Müller has True Bypass.
With the modification components, you can control the filter’s properties and influence how aggressive the pedal should be.
Level of difficulty: 3 (out of 5)
The manual for Hjärt Müller kit (Swedish)
The manual for Hjärt Müller kit (English)