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I was wondering if you've experimented removing the red led right after the tone in the second feedback loop of the opamp? The Clay Jones overdrive that was an "inspiration" for the dumbloid only has clipping diodes in the first feedback loop: Compared to the dumbloid (Special overdrive):

Can you share a BOM for the Cobbler?

I settled on a 10k resistor instead of the 18k for the lowest value for the bass pot and I added a toggle switch that switches in a 1M resistor across the outer lugs of the 1M gain pot so I can select between high and a little less gain. It does have a small impact on the highs as well making...

I build the AION version a while ago. Compared it to a Zen drive today and it’s got too much bass IMO even on the lowest setting of the bass pot and the gain is too much too quickly. So I think I’m going to experiment with a 500k gain pot instead of 1M to get a more gradual and lower amount of...

Ok, the 2 caps around the 560R and 47R were broken somehow, I noticed a change in behavior when adding the Ruetz mod and after replacing the caps (2,2u and 4,7u) the issue resolved.

Running the gain at 3 oc and reducing the volume on the guitar results in a strong cocked wah sound. I checked all component values so that’s not it. What’s your experience with the Muroidea?

I’ve build the Muroidea and compared to the AION Helios legacy I build a few years ago the Muriodea becomes or sounds more nasal when increasing gain. The Helios has the Ruetz mod but in minimum it shouldn’t work. Component wise the filter is similar and the voicings in the loop of the opamp are...

Thanks for sharing! The issue I have with some combinations is the large volume drop. The symmetrical germaniums have to be compensated too much IMO. So why did you choose the asymm 3mm red led with the 2n7000? I have symmetrical germaniums with mosfet and bat41 with mosfet, will probably...

The schematic seems to be printed mirrored?

Will check it out!

I’ve decided to use a 6-way rotary switch to select between clipping options like: asymm 1n4148+ 1n4148/5mm red, asymm 1n4148, symm 3mm red leds, symm 1n4148, a symm mosfet+bat41 (like the Zendrive), symm mosfet+germanium

Try to use shrink tube or black tape covering the led and ldr completely. Sustain and balance to max will give you the most compression from this pedal. I use the bottom switch position and normally have all controls in the middle for a nice soft compressed boost. The treble control is great to...

Good to know about the carbon comp resistors. To make things easier I will use an on-on switch to select between 2 options. My question remains which clipping options are the most popular from experience?

There have been multiple discussions on the forum about the PackRat, Fat Rat and (Jam Pedals) Rattler. I've build a legacy AION Helios pcb in the past but want to try out some other things so I ordered a Muroidea PCB. (The Triad Distortion wasn't in stock in the EU here) I noticed that Jam...

You can try to detect where the circuit has an issue using an audio probe. (100n cap -> wire to output jack hot lug). Get the schematic and start at the end of the schematic. Touch the component that's near to end to see if you get a signal. HTH

AFAIK the builder for Friedman is the same person/company that builds the Bogner pedals. I’ve build a Tempest DS/BE hybrid and a Complex and somehow the Complex feels very stiff and lifeless to me. I much prefer theTempest.

I used a tant 2u2.

I just populated the Jump Drive PCB and had to use some combinations of caps and resistors to build it, but these were close to the values mentioned. I used RC4558P opamps and OA1182 germanium diodes with a Uf around 359mV. To me this pedal behaves to what I’m hearing in the demos, there’s a...

Anyone trying to build this one, the TL022 can be the cause of this. Replacing it with an LM358 should solve it. I replaced it with a TL072CP and the depth now works linearly before it increased the rate in the middle of the depth pot and both sides (cw/ccw) reduced it.

I’ve juist build a Lithium from AION Fx which is an EHX Small clone with a mix control and a depth pot instead of the 2 way switch. I didn’t get any chorus at first which turned out to be a broken bias trimpot. In the description it says this about the depth control: Depth knob The original...