Maybe you should consider obtaining help from a more specialized forum, from people who understand guitars as well as electronics. Have you considered DIYstompboxes.com? Here is a thread on that forum that discusses the venerable Baxandall tone control circuit, both active as well as passive, in what appears to be knowledgeable detail. I saw nothing that indicated the "baxandall circuit requires a lot of power."My guitar electronics didn't put out anything... dead.
I think its because the baxandall circuit requires alot of power.