stupid buffer tricks?

[pinkjimiphoton]

hey guys, is there a particularly better buffer to use to really isolate two effects?

i mean...like...i'm having a hell of a time with switching transient noise with pnp fuzzes with my digitech xp pedals.

i built a loop box, so i can isolate the xp from my ge fuzzes when i don't need it... it has a volume knob for after the xp, so i can get a good input signal and turn it back down to unity on the other end when i have the loop engaged..

thinking since a very basic use of a 3904 as a buffer helped, maybe a different buffer circuit would work better.

was thinking perhaps at the front and back end of the loop box?

would a higher input impedance help block this?

thanks...i'm kinda barely beginning to get a handle on this issue.

[asatbluesboy]

I hear "isolation" and I think "transformers". Don't have the slightest as to where to start, though... 

[Ronan]

Most non-true-bypass pedals with Ibanez or Boss written on them should behave like a reasonably good buffer I would think (in bypass mode). You could drag out some old pedals and experiment to find out which ones work best as buffers, then check the schematics of the good ones to find out the circuit inside.