Upcoming EQD / Boris collaboration pedal

Coda said:
I’m not too excited about this pedal…I can build my own version (better too?). I will say that all of the teasing has lead me into a big Boris kick…
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Yeah, between this and the Boss FZ-1W, I‘m more excited about the FZ-1W. That one sounds super sweet and likely will be a bit hard to copy.
 

A - so apparently the circuit’s been changed to negative ground, and now I’m thinking/wondering if it can be built on a Muffin board with the right BoM

B - I respect how much time and effort went into tweaking the circuit to get it right, but it sounds like they could have saved a few months of shipping prototypes around the world if they’d just asked for Wata’s original to trace a *bit* sooner.

That said, I’d *love* it if part of my job was to spend a year tweaking a Big Muff for a famous musician’s signature pedal. I ain’t that lucky.
 
manfesto said:

A - so apparently the circuit’s been changed to negative ground, and now I’m thinking/wondering if it can be built on a Muffin board with the right BoM

B - I respect how much time and effort went into tweaking the circuit to get it right, but it sounds like they could have saved a few months of shipping prototypes around the world if they’d just asked for Wata’s original to trace a *bit* sooner.

That said, I’d *love* it if part of my job was to spend a year tweaking a Big Muff for a famous musician’s signature pedal. I ain’t that lucky.
Click to expand...

I just built an Elk Sustainar on the Muffin pcb a few weeks ago. It took some tweaking, but it’s pretty good.
 
manfesto said:
A - so apparently the circuit’s been changed to negative ground, and now I’m thinking/wondering if it can be built on a Muffin board with the right BoM

B - I respect how much time and effort went into tweaking the circuit to get it right, but it sounds like they could have saved a few months of shipping prototypes around the world if they’d just asked for Wata’s original to trace a *bit* sooner.
Click to expand...

Yep, negative ground / NPN transistors (no charge pump or anything like that). It could be built on the Muffin PCB, the biggest catch is that the tone control is reversed.

www.pedalpcb.com

Shika Fuzz - PedalPCB.com

Compare to EQD Hizumitas Fuzz
www.pedalpcb.com www.pedalpcb.com
 
So what transistors are used?

Tried some A733’s but the ones I got don’t work for shit (fortunately they were cheap). Switched them out for some BC108C’s I had laying around. Those definitely work. Pretty gnarly too.

Just curious about different trannies.
 
I just saw this video of a DS-1 being used while comparing the Hizumatis vs Triangle.
(I like the pedal demos in this channel in general)

 
So is this thing just a 1:1 Elk Sustainar with the same parts values as the schematic on Kit Rae's big muff page?
 
Cool. When it was announced I figured the difference was mostly just more power filtering and the tone control being wired backwards, but I watched that teaser and froze the video to see the schematic Jamie drew and it looked like q1 was missing the 470pf cap in the first transistor section at least.
 
I built the Elk based on the Kit Rae schematic and it wasn’t that good. Too much bass, and it didn’t sound quite right. I ended up doubling the tone cap, which got me much closer. I think the changes made by EQD were to accommodate for values drifting over time…
 
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