madbeanpedals::forum

What are people thinking about the latest Big Muff out there ?
https://jhspedals.info/products/big-muff-2

JHS x EHX have put out a second collaboration, borne out of Bob Myers rotting garage.
The video is worth a watch, mostly to see how endearing Bob is and how unpretentious he is about everything.
https://www.youtube.com/watch?v=Ykqj6ccts5U&t=66s

Ive breadboarded the circuit as it appeared on the hand written notes and its pretty interesting.
Like a couple of the demo-ers on YT noted (example: https://www.youtube.com/watch?v=F9HjfNVVrS8), its strong on bass side and there is an undercurrent of fatness that I would say is almost omnipresent, with a middy-fuzz on top. You can hear that around 19 mins or so in the video - super interesting.

The sustain is pretty high from the offset, and adds some sizzle and hair as you up it. I wouldnt say the gain or for that matter the volume is in any way lacking. I played around with making the first gain (sustain) stage higher gain and didnt feel it was helpful. Even at max sustain now, you get some motorboarding artefacts - again seen in the video above around 18mins in.

Overall a fun addition to the lore of EHX Big Muff, not sure its that exciting to justify the $250 price point and I would have rather they did something more "out there", but maybe there is a more to come after they test the water with a low-barrier, high selling item like a fuzz/distortion.


Aside:

I decided to make a PCB for myself as an Xmas project because I cant justify buying new pedals right now, and having shared that a few people asked for one. I've therefore made a small pre-order for some standard 3pdt-type boards (rather than my own relay one) for sale. Let me know if you want to grab one.

I'm curious about how it sounds in person. I've seen the videos, but with the YouTube compression, I'm not sure how it really sounds. There's a nano available now. It's 122.00 which isn't terrible.


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Here's what I was able to pick off from the drawings that are out there now.

BiglyMuffins.gif

It's got this bass that is always felt below the fuzz. Kinda cool, definitely different enough to warrant exploring.

Quote from: madbean on December 14, 2025, 05:36:39 PMHere's what I was able to pick off from the drawings that are out there now.

[attach id=29038width=2000]BiglyMuffins.gif[/attach]

Yep that's the same as I've posted to FSB
So as the doctors say, I concur!

Good to know I was seeing the same stuff as you. I think it sounds pretty rad to be honest.

Maybe I'll just give this one to the community to do with as they please!

BiglyMuffinsPCB.png

Quote from: madbean on December 14, 2025, 06:17:52 PMMaybe I'll just give this one to the community to do with as they please!

BiglyMuffinsPCB.png

Cool. I got a 1590B enclosure just looking for a circuit.


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I posted a vero over at FSB

https://www.freestompboxes.org/download/file.php?id=48990&t=1

This is seriously cool! Well done, both of you. I feel like garbage, so I sat laid down in bed and started adapting the mayonnaise fuzz mods/controls to the deuce. Won't breadboard them until I can sit properly, but there's a good chance at least one of the switches is placed wrong, as well as values needing tweaked, but it's the first bit of creative juice I've gotten in a while.

IMG_20251215_111529__01.jpg

Quote from: LaceSensor on December 14, 2025, 11:15:35 AMWhat are people thinking about the latest Big Muff out there ?

Personally I think this falls under the YABM category. There is hardly a sound this thing can make that I can't get out of that classic "overdrive into big muff" combination.
It's great that we already have the option to build one ourselves though.

As much as I'm skeptical about anything these days, especially from JHS (not a hater) it's really cool to see ANYTHING that anyone can get excited about.  I certainly applaud digging up cool stuff that never came to market.  I'm currently in my Helix phase (just as Stadium takes over) and at some point will realize I still need my pedals.  Does this thing make the cut?  Doubt it.  For the life of me I've never been able to use a Muff.  The other guitar player in my childhood band...Muff central.  I just don't get it.  If he plays it...magic...if I play it...garbage.

using my weird IO with top mount jacks and relay bypass ...and 1/8W resistors

Screenshot_20251219_223753.png

Edit: fart. Didn't realize how similar it is to Bean's. Just came together that way.

Brian, do you charge the layer colors to get them more pleasantly dark?

nice

Is it really different enough from the regular opamp muff to justify a new release?

Quote from: Aentons on December 20, 2025, 06:23:25 PMIs it really different enough from the regular opamp muff to justify a new release?

"Yes!"
—money

Quote from: jessenator on December 20, 2025, 05:41:25 AMBrian, do you charge the layer colors to get them more pleasantly dark?

Yes, I have the most used layers set to custom colors to make everything easy on my eyes. I can share the settings if you want.

Quote from: madbean on December 21, 2025, 11:10:47 PM

Quote from: jessenator on December 20, 2025, 05:41:25 AMBrian, do you charge the layer colors to get them more pleasantly dark?

Yes, I have the most used layers set to custom colors to make everything easy on my eyes. I can share the settings if you want.

That would be great! Thanks.

Now if only the rest of the UI had a dark mode. 

(https://c.tenor.com/04coQa9mz28AAAAC/spongebob-my-eyes.gif)

Having some fun.

This one's gonna be laser etched, with the soot in place and sealed for the black. I'll upload the art of anyone wants it.

IMG_20251221_171852__01.jpg

I love it! Upload it, if you have time, please.


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Quote from: jimilee on December 22, 2025, 02:33:12 PMI love it! Upload it, if you have time, please.

enjoy!

This is mapped (https://www.dropbox.com/scl/fi/x73ysjsohm8jj8guycjee/deuce-muffin.zip?rlkey=vfg9rpb46i45jdqvkx3jbrcju&st=k0xkvyma&dl=0) to Bean's Standard Series 1590B, with control text spacing for 13mm and 19mm knobs. But feel free to give it a check.

edit: I should mention that it doesn't have any drill markers or labels for any potential tone bypass controls

Quote from: jessenator on December 22, 2025, 05:13:40 PM

Quote from: jimilee on December 22, 2025, 02:33:12 PMI love it! Upload it, if you have time, please.

enjoy!

This is mapped (https://www.dropbox.com/scl/fi/x73ysjsohm8jj8guycjee/deuce-muffin.zip?rlkey=vfg9rpb46i45jdqvkx3jbrcju&st=k0xkvyma&dl=0) to Bean's Standard Series 1590B, with control text spacing for 13mm and 19mm knobs. But feel free to give it a check.

edit: I should mention that it doesn't have any drill markers or labels for any potential tone bypass controls

Thank you sir.


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Quote from: jimilee on December 22, 2025, 06:51:27 PMThank you sir.

No problem!

Quote from: jessenator on December 21, 2025, 11:28:59 PMThat would be great! Thanks.

This will change your colors for both schematic and layout to the ones I use. The difference is my colors are much more muted in both to reduce eye strain. Only the most used layers have color changes so you can modify the rest as you like. Please be sure to back any important pref files before making this change and I don't take any responsibility for changes you make. That said, it's straight forward. This is for 7.7. I've attached a zip of the SCR I use if you wanna skip all that stuff.

DO NOT PASTE THIS IN THE delauftcolors.scr - create a separate one.

• Copy the text below into a text file and save it.
• Name the file something like "MyCustomColors"
• Rename the file extension from .txt to .scr.
• Place the file in your Eagle SCR folder
• Open the Layout app then open the file you created using the SCR button
• In the Options menu set Layout Background to use the Colored option and Schematic Background to Black option.
• If you don't like the colors, you can revert back to the default by running the defaultcolors.scr

set palette black;

set palette  0 0xFF000000;
set palette  1 0xB43232C8;
set palette  2 0xB41A6B1A;
set palette  3 0xB432C8C8;
set palette  4 0xFF812020;
set palette  5 0xB4C832C8;
set palette  6 0xB4C8C832;
set palette  7 0xB4C8C8C8;
set palette  8 0x643D3D3D;
set palette  9 0xB40000FF;
set palette 10 0xB400FF00;
set palette 11 0xB400FFFF;
set palette 12 0xB4FF0000;
set palette 13 0xB4FF00FF;
set palette 14 0xB4FFFF00;
set palette 15 0xB4FFFFFF;
set palette 16 0xC8CC6600;
set palette 17 0xC8CC9900;
set palette 18 0xC8336600;
set palette 19 0xC8666633;
set palette 20 0xC8669966;
set palette 21 0xC8336666;
set palette 22 0xC8009966;
set palette 23 0xC8006699;
set palette 24 0xC8FF9900;
set palette 25 0xC8FFCC33;
set palette 26 0xC8669900;
set palette 27 0xC8999966;
set palette 28 0xC899CC99;
set palette 29 0xC8669999;
set palette 30 0xC833CC99;
set palette 31 0xC80099CC;
set palette 32 0xC8996699;
set palette 33 0xC8CC9999;
set palette 34 0xC8CC6666;
set palette 35 0xC8660033;
set palette 36 0xC8663366;
set palette 37 0xC8996666;
set palette 38 0xC8336699;
set palette 39 0xC8339999;
set palette 40 0xC8CC99CC;
set palette 41 0xC8FFCCCC;
set palette 42 0xC8FF9999;
set palette 43 0xC8990033;
set palette 44 0xC8996699;
set palette 45 0xC8CC9999;
set palette 46 0xC86699CC;
set palette 47 0xC866CCCC;
set palette 48 0xC8FBAF5D;
set palette 49 0xC8AFD134;
set palette 50 0xC86A6A6A;
set palette 51 0xC87E7E7E;
set palette 52 0xC87E7E7E;
set palette 53 0xC8969696;
set palette 54 0xC8969696;
set palette 55 0xC8969696;
set palette 56 0xC8FDC689;
set palette 57 0xC8D9FF3D;
set palette 58 0xC8E3E3E3;
set palette 59 0xC8D62525;
set palette 60 0xC839D437;
set palette 61 0xC8E6E600;
set palette 62 0xC82C7BCE;
set palette 63 0xC89526DE;

set palette white;

set palette  1 0xB4000080;
set palette  2 0xB4008000;
set palette  3 0xB4008080;
set palette  4 0xB4800000;
set palette  5 0xB4800080;
set palette  6 0xB4808000;
set palette  7 0xB4505050;
set palette  8 0xB4C0C0C0;
set palette  9 0xB40000FF;
set palette 10 0xB400FF00;
set palette 11 0xB400FFFF;
set palette 12 0xB4FF0000;
set palette 13 0xB4FF00FF;
set palette 14 0xB4FFFF00;
set palette 15 0xB4000000;
set palette 16 0xC8CC6600;
set palette 17 0xC8CC9900;
set palette 18 0xC8336600;
set palette 19 0xC8666633;
set palette 20 0xC8669966;
set palette 21 0xC8336666;
set palette 22 0xC8009966;
set palette 23 0xC8006699;
set palette 24 0xC8FF9900;
set palette 25 0xC8FFCC33;
set palette 26 0xC8669900;
set palette 27 0xC8999966;
set palette 28 0xC899CC99;
set palette 29 0xC8669999;
set palette 30 0xC833CC99;
set palette 31 0xC80099CC;
set palette 32 0xC8996699;
set palette 33 0xC8CC9999;
set palette 34 0xC8CC6666;
set palette 35 0xC8660033;
set palette 36 0xC8663366;
set palette 37 0xC8996666;
set palette 38 0xC8336699;
set palette 39 0xC8339999;
set palette 40 0xC8CC99CC;
set palette 41 0xC8FFCCCC;
set palette 42 0xC8FF9999;
set palette 43 0xC8990033;
set palette 44 0xC8996699;
set palette 45 0xC8CC9999;
set palette 46 0xC86699CC;
set palette 47 0xC866CCCC;
set palette 48 0xC8FBAF5D;
set palette 49 0xC8AFD134;
set palette 50 0xC86A6A6A;
set palette 51 0xC87E7E7E;
set palette 52 0xC87E7E7E;
set palette 53 0xC8969696;
set palette 54 0xC8969696;
set palette 55 0xC8969696;
set palette 56 0xC8FDC689;
set palette 57 0xC8D9FF3D;
set palette 58 0xC8E3E3E3;
set palette 59 0xC8D62525;
set palette 60 0xC839D437;
set palette 61 0xC8E6E600;
set palette 62 0xC82C7BCE;
set palette 63 0xC89526DE;

set palette colored;

set palette  0 0xFF000000;
set palette  1 0xC8253647;
set palette  2 0xB4847145;
set palette  3 0xB4008080;
set palette  4 0xC8552C2C;
set palette  5 0xB4800080;
set palette  6 0x64FF0000;
set palette  7 0xB4B4B4B4;
set palette  8 0x784B4B4B;
set palette  9 0xC84B6E91;
set palette 10 0xB4AF955B;
set palette 11 0xB400FFFF;
set palette 12 0xC8984E4E;
set palette 13 0xB4FF00FF;
set palette 14 0xB4FFFF00;
set palette 15 0xB4B4B4B4;
set palette 16 0xC8CC6600;
set palette 17 0xC8CC9900;
set palette 18 0xC8336600;
set palette 19 0xC8666633;
set palette 20 0xC8669966;
set palette 21 0xC8336666;
set palette 22 0xC8009966;
set palette 23 0xC8006699;
set palette 24 0xC8FF9900;
set palette 25 0xC8FFCC33;
set palette 26 0xC8669900;
set palette 27 0xC8999966;
set palette 28 0xC899CC99;
set palette 29 0xC8669999;
set palette 30 0xC833CC99;
set palette 31 0xC80099CC;
set palette 32 0xC8996699;
set palette 33 0xC8CC9999;
set palette 34 0xC8CC6666;
set palette 35 0xC8660033;
set palette 36 0xC8663366;
set palette 37 0xC8996666;
set palette 38 0xC8336699;
set palette 39 0xC8339999;
set palette 40 0xC8CC99CC;
set palette 41 0xC8FFCCCC;
set palette 42 0xC8FF9999;
set palette 43 0xC8990033;
set palette 44 0xC8996699;
set palette 45 0xC8CC9999;
set palette 46 0xC86699CC;
set palette 47 0xC866CCCC;
set palette 48 0xC8FBAF5D;
set palette 49 0xC8AFD134;
set palette 50 0xC86A6A6A;
set palette 51 0xC87E7E7E;
set palette 52 0xC87E7E7E;
set palette 53 0xC8969696;
set palette 54 0xC8969696;
set palette 55 0xC8969696;
set palette 56 0xC8FDC689;
set palette 57 0xC8D9FF3D;
set palette 58 0xC8E3E3E3;
set palette 59 0xC8D62525;
set palette 60 0xC839D437;
set palette 61 0xC8E6E600;
set palette 62 0xC82C7BCE;
set palette 63 0xC89526DE;

I placed a JLC order the other day and stupidly forgot to order even just 5 of my Muff2 layout. Sheesh.

Quote from: madbean on December 23, 2025, 05:17:25 PMI placed a JLC order the other day and stupidly forgot to order even just 5 of my Muff2 layout. Sheesh.

I'll hook you up: power-IO, main, relay. Although I stuck with the slow boat, so it'll be a minute.


Although, it is val, so maybe too advanced :P

Just a heads up my PCB is verified working now, and I am 99% confident in the component values. Someone with a real one checked them off.

A heads up, I have also tested various volume pots, and personally prefer the A100K
B10K works fine just gets LOUD fast, duh.

I imagine anything 10k or 100k would be fine, your preference.

Edit
Ok so i did a bit more testing. I think the A100k pot for volume sounds significantly preferable to my ears at least vs the 10k
This is a change in isolation, I didnt adjust anything else vs my redrawn schematic.

Verified my board tonight. Am experiencing the 'max sustain artefacts' LaceSensor mentioned over on PPCB, but there's enough to go around without diming it.

This thing is ...gutsy. Just pushes and pushes. I want to play a bit with components and values and see what mayhem I can get up to.

What did you select for volume control?
Tbh those artefacts are only there when not playing, and who expects a big muff to be quiet lol?

Quote from: LaceSensor on January 03, 2026, 11:56:50 AMWhat did you select for volume control?
Tbh those artefacts are only there when not playing, and who expects a big muff to be quiet lol?

Fair enough. It just feels louder than others I've built, but might be due to the volume pot.

I'll poke around and swap it if it's the base 10k. Nope just rechecked my board post, and I used a linear because tradition.

Logarithmic? On an output volume? Who would've thought‽ I was building it to just see if it worked first 😂 but I might could have rechecked.