As far as tonestacks and lm386 dirtboxes go...

[DaveM]

I'm looking to box a Burning Crunch and Smash Drive together, footswitchable between the two.  To save a few knobs, I'm looking to have them both run through the same tonestack.  Is there any major differences in between the two?  Would one work better for both circuits than the other?  I'm lacking all of the parts to test both 'stacks right now, so I'm hoping you guys would be able to point me in the right direction.  The schematics for both are below, Crunch on the left and Smash on the right.

Thanks,
Dave

[TimWaldvogel]

I would use the smash drive tonestack, the burning crunch seems to be super trebleu from the sound clips I have heard. Not bad, just trebley, if not use the treble cap from the smash drive and use the mid and bass pots from d schwartz's design

[Brymus]

The burning Crunch tonestack has been scaled,the Smash Drive tonestack is a basic Marshall amp type tonestack.
They are two different kinds on different scales,
I wouldnt mix the components between the two,unless you keep the same scale when doing so.
The clips of the Burning Crunch I heard by D Shwartz sounded incredible,not trebly at all but thats IMO...

Just breadboard what you can and switch between different components on your breadboard,listen for yourself ,we all like different sounds.
Bryan