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The Aion schematic was suggested earlier in the thread as an example of using trimpots to adjust the bias: https://aionfx.com/app/files/docs/deimos_legacy_documentation.pdf I just used the trimpots + related resistors from Aion to the PedalPCB schematic. I have tested the effect on a Fender...

I have used the attached schematic for what I now have on my breadboard. I have written the name and values I have changed in blue on the right hand side.

Hi! I'm still struggling getting the bias right. Have tried with trimpots along the lines of the Aion build documents, but can't dial in sounds that really work. Went back to using just the resistors on the breadboard and currently have the biasing resistors set up like this: R1 100k R4 88k R5...

Ok, have tested it with 10k in R1 and R7. To me it now sounds more destroyed and reminds me a bit like a bit crusher. I think the volume output is a bit higher, and the notes sustain for a while, but the dynamics when I pick the notes is very flat and compressed. Chords or more than one note...

Here are the voltages with R1 and R7 as 10k: Q1 C. 8.67V B. 11mV E. 0.00 Q2 C. 250mV B. 85mV E. 0.00 Q3 C. 8.58V B. 250mV E. 190mV I am assuming you meant R1 and R7 from the pedalpcb schematic. It's a bit late so can't test how this sounds until tomorrow.

The supplied voltages are with the suggested bias resistors from small bear: Q1 c 8,29V Q2 c 0.178V Q3 c 8,7V

Thank you for responding. I haven't soldered the components to the PCB yet, it is still on my breadboard. I have checked for continuity and that the components and values are correct with my DMM. I have attached some pictures of the breadboard, though it is difficult to make out connections on...

Hi, and thanks for replying! I tried the stock values first (Tone vendor-values). They sounded worse as in more gated and little sustain. The circuit sounds a little better with the bias values from small bear. I recently built a fuzz face which turned really great. Compared to that this...

Hi! My power supply is putting out 9.03V. I'm building the circuit with the TC1044, and pin 5 on the IC reads -8,79V

Hello, and thank you for answering. I have looked at the docs from Aion and will try putting some trimpots on my breadboard. I happened to have both a 10k and a 50k trimpot so will see if I can get it sounding better. Will a more correct bias also affect output volume? One of the reasons for...

Hi! I'm currently building a Tone Vendor mk2. Bought a transistor set from Smallbear which came with the following components: Q1 2n1305 - hfe: 67, leakage 40 Q2 OC75 - hfe: 70, leakage 270 Q3 2n1305 - hfe: 103, leakage 10 Smallbear suggest the following bias resistors: R3 100k (R5 on the...