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DeadendFx has a board for the Crystal Dagger. It's the Shard: https://drive.google.com/file/d/1ocYb4a0HaWZYs3LlNG0tKL1VbXGSi3le/view

Will do, thanks! There's one from the late Blackout Effectors, called Sibling Phaser. I think it's the same phaser circuit (or at least super similar) found in the Blackout Effectors Crystal Dagger

Thanks for the answer! I have had a lot of fun with a 3-stage phaser (3 stages for me is the right amount of effect) based on the phase 45 topology, if I decided to add some feedback would I need the cap?

The phase 90 is the reason I fell in love with guitar pedals! Why does the feedback go back to the 2nd all-pass stage and not the 1st one?

Bootstrapping largely increases the input impedance. It's still somewhat magical to me, but this is a nice resource that helped me understand some of it: https://sound-au.com/articles/bootstrap.htm (disclaimer: I don't have enough electronics knowledge to know if everything is correct there, but...

Well, as the OP, I consider that an achievement (even though I'm not the one responsible for the tag) :LOL:

That might be a good idea for april fools, though... "Redesign" some of the most wishlisted out-of-stock boards and watch chaos unfold

I like how the one thing that unites everyone in this forum is a somewhat absurd idea being taken way too seriously :LOL:

All I wanted was to genuinely understand why Cornish buffers are built like that :LOL:

I don't think this is directed at me, but I feel like I have to make it clear that this was not my intention when making this post. I recognized the bootstrapped design and was genuinely curious as to why it would be used, since there are more parts involved. That's good to know, I might give...

I'm not a jfet master like Chuck, but I can help you with the fet measuring process if you want. Shoot me a PM if you want to do it

I'm not opposed to buffers at all! My question is related to the complexity of the buffers used. What could be the benefits of a bootstrapped emitter follower versus an opamp, for example

Motivated by the new aion traces, a question has emerged. If I'm not horribly mistaken (wouldn't be the first time), the buffers in those Cornish designs are bootstrapped emitter followers. I know this allows for higher input impedances, but is it worth the extra effort for a guitar pedal? Thanks!

Ok, thanks! That's what I'll do

I have some smd jfets on their way and I would like to match some for a phaser. How do you guys suggest I keep them in place?

There's also the service manual for the RG80 (pretty much the same thing circuit wise) that shows some voltages. If you were to bias it like the amp, you should look for ~3/5 of your supply voltage in the drain of the first fet and ~1/2 in the drain of the second one. But it's likely you will...

Nice job! Insides perfect and I dig the color In my experience, the sustain trim has a very limited useful range. edit: IIRC, effectslayouts has a board with a different implementation of a compression control (as well as a blend)

The official schematic for the AMT SS-30 can be found online and there they use a BAS70 in the place of the BAT85

Now that I see it, it's not exactly the same thing (there's an extra resistor in the amt page). But I think that's the original idea https://media.amt-sales.com/why-tube-like-cannot-measure-up-to-tube-inside/

This is based on a triode emulation proposed, if I'm not mistaken, by Viktor Kempf (?). It's widely used in AMT designs. I think it's supposed to cause some degree of clipping asymmetry. I suppose you'd be fine with most Schottky diodes there