High Cut Circuit

[resophonic1]

I'm interested in incorporating the High Cut Circuit (ala K60) into an amp I would like to build. Can anyone lead me in the right direction on some online info on how to add it to an amp circuit. Or maybe some circuits to study to see how it is done. I would really like to know the ins and outs of how it works. My plan is to build the clean side of Dumble and add the High Cut.

[gearhead]

Look at a Vox AC30 circuit; there are bunches of them at blueguitar.org.

[Buschman]

I used one on my Express build straight from the "ASTROID" layout. The Express circuit really didn't need it I found out.