Slam dunk some funk with the Auto Wah. This is a kit based on Jack Ormans modified Dr Q Envelope Filter. The harder you play, the more it quacks and it really does quack.
This kit has one pot and one toggle switch for its control. The PCB is laid out for a board mounted pot and toggle as you can see from the pic.
This kit is supplied with a JP125B enclosure.
There are quite a few parts but this goes together easily enough for most people to hook up.