Train Crash kit

The Train Crash is an overdrive/preamp that emulates the sound of the legendary Boutique amp.

The overall loudness is controlled by the VOLUME knob. The HI-CUT pot allows to cut some high frequencies post-overdrive, which works great for amp tuning. The GAIN control sets the desired input gain of the pedal. The 3-ay switch controls the pre-overdrive high-frequency boost. The UP position is the maximum boost to get, and suits humbucker pickups the best. The MIDDLE position turns off this part of the circuit, leaving the response flat. The DOWN position boosts highs just a little bit, making it the best choice in a situation when only a tiny bit of sparkle should be added to the tone.

This kit contains the PCB and all necessary parts. The enclosure can be selected, please select 3 knobs, up to 15mm diameter, for 6,3mm shaft separately.
Here is the bill of material: bill of material

This project is by PCB Guitar Mania, in collaboration with Musikding. If you have any problems with the contents of the kit, please contact Das Musikding (Klaus). For technical problems please contact PCB Guitar Mania: PCB Guitar Mania support.

Here is the direct link to the manual with layout and schematic:
Building docs