Tight Box kit

The Tight Box is based on a Plexi amp that is designed for more flexibility. Classic Plexi and JCM800 tones are at your command. It adds a 3-band EQ for versatile tone shaping as well as a Presence control. Finally, there is a switch to adjust Gain structure. This is a harmonically rich overdrive that allows you to summon all your favorite Plexi style tones.

This kit contains the pcb and all necessary parts. You can choose an enclosure, please select 6 knobs, up to 19mm diameter, for 6,3mm shafts separately.
Here is a list with the parts in the kit: Bill of materials

This project is by GuitarPCB.com, in cooperation with Musikding. If you have any problem with the content of the kits like missing or wrong parts, please contact Musikding (Klaus). For any technical problem relating to building this project, please contact Barry at GuitarPCB.com forum.

You get full technical support at the GuitarPCB.com forum. There is even more detailed build information available there:
GuitarPCB Forum

Here is the direct link to the building docs, including layout and schematic:
Build documentation