The circuit I did up is dirt simple, 10K Rp 1K Rk about 25ma. It's just very neutral but powerful sounding, it doesn't add any tone. Makes one think they just doubled thier power. It did take a little trial and error to find the proper position in Johnan's system. One of the problems with these get togethers is there isn'r enought time to find the right synergy between gear.