What up guys,
My H&K TubeFactor has been my main go to overdrive due to its stunning pure tube tone.
However, it's bulky size and Factor 1/2 with arbitrary volume really bugged me.
So... Extreme Pedal Makeover!! 😀
The 1590D was made for this pedal.
Used a 4pdt switch to give it 2 channels.
The drilling plan: