Buffer/Split question

[Buffalo Tom]

This schematic is a part of a mute pedal that mutes a mic xlr signal and a piezo pickup signal at the same time. (shown here is only the piezo part..) I need to split the piezo signal to one direct out and one tuner out. The buffered tuner output jack is on all the time and the direct out is the one that gets muted. My goal is that the piezo pickup and the direct output should be totally untouched and not affected by the tuner or the buffer. Is this the case here? Totally newbie question but I'm not sure if the capacitors, resistors etc also affect the direct output.

[GGBB]

How do you plan to implement the "mute"?

If "mute" merely means disconnect, then you should be fine.

If done in the usual fashion - that is to ground the signal - then "muting" the direct output also mutes/grounds the input which feeds the tuner out buffer, and therefore no signal passes to the tuner out.

You need to buffer anything that is ground-muted from anything else that shouldn't be muted.

[Buffalo Tom]

How do you plan to implement the "mute"?

Like this:

[GGBB]

Should be fine. You might experience some switch pop when muting/unmuting - not sure if that's important.

[Buffalo Tom]

Should be fine. You might experience some switch pop when muting/unmuting - not sure if that's important.

So this Y-split is "clean" and the piezo pickup sound is not affected by the electronics from the buffer. My direct out is "untouched"? I only wanna use the buffer as signal splitter for the tuner. One question about switch pop! Been told that anti pop resistors should be placed at circuit board input to ground. Is that the solution here too, so I put it in the buffer circuit? Or should I place it direct on the switch? From common to ground? Or from NO to ground?

Thanks!

[GGBB]

My direct out is "untouched"?

Technically no. It is "touched" by the buffer for the tuner out. You can't get around "touching" the signal if you want to split it - you can only minimize the impact. I don't think anyone would be able to notice.

"Anti-pop" pull down resistors are added to whatever would otherwise "float" and might have voltage. In your case that's the input cap of the buffer. So a pull down in front of the cap would be the usual place.