The N.E.W. 6 Knob Compressor is an OTA-based compressor which provides a wide range of adjustability to the compression characteristics.
This kit contains all necessary parts, except the pcb: Parts list
The pcb is also available here in the shop.
The 6 knobs for the pots are not included in the kit, you can select them yourself. The pots have round 6.3mm shafts.
Here´s the build documentation: