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1.3.2. Maybe a little bit too much.. at least to me. Btw - I'll try to upload raw recording, without IR applied. Then everyone interested will be able to try their favorite IR.

I agree.

VCC is more or less supply voltage. That would be around 9V (voltage of the power supply minus voltage drop on a protection diode). Your 6.19V is drain voltage, not VCC. VCC is constant. Drain voltage changes with trimpot adjustment. Vp - it's a parameter of the transistor. You have to remove...

Can you measure Vp of the Q5 and Q6? With 9V supply, J201 with Vp between -0.6V and -0.8V, 1k source resistor and 50k trimpot, you should be able to adjust drain voltage from VCC value down to about 1V. You can try changing the trimmers to 100k. But, from my experience - here, you should be...

Not sure about previous setting but not in the middle of rotation. Rather something like 10-11 o'clock. Yes. 15-16 o'clock is the max I'd use with bridge pickup on the strat.

You didn't write anything about transistors.. did you use J201, what type (tht or smd). Are you sure Trim 1 and 2 are 50k and not a lower value. Are R14 and R22 1k and not a higher value.

So.. https://www.dropbox.com/scl/fi/bmjyutddaf9btjpgzq64d/push3.wav?rlkey=qspskiou4gmhfffq92riz9shy&st=bdgwym6a&dl=0 Settings for the above Strat (bridge pickup) -> breadboard -> audio interface -> 4x12 V30 Mesa IR. First three parts - 2N2905 as Q2, then another three parts with ASY34. Gain...

If you want to trace the O2 - it's available on Amazon, quite cheap (around 100$). Not sure about worldwide shipping.

So you feed the real cab with a cabsimed signal? I need to breadboard it. In the combo build thread you posted frequency response of the cabsim - looks like there's a lot of top end.

I've seen your combo build thread. Cool stuff. How do you like AMT cabsim?

A new knob... we'll see :) Waitng patiently.

Yes. Gain in the middle position. 4v for the 2N2905, TG5 and ASY34. 3.7V for the 2N1040 and Af139. Yes. BASS around 1:30 PM, TREBLE @ 3 PM. Voice switch in Tight position. The range of adjustments is quite wide. An additional advantage is the Voice switch. Take into account that I did not...

I haven't visited this thread in a while, I might have missed it. Strange, because I have the schematics for the E2, K2, S2, B2, D2... Thanks for posting :)

On mybreadboard now... it goes from light drive to distortion. As a Q2 i tested Si and Ge transistors: 2n1040 (Ge, hfe 20), 2N2905(Si, hfe 115), TG5 (Ge, hfe 57), ASY34 (Ge, hfe 11), Af139 (Ge, hfe 44). All transistors measured with DCA75. Slight differences in sound between transistors but...

I don't recall seeing R2 schematic anywhere. I have R1 schematic (unverified).

I installed the MP38A. The board is waiting for a box so I can still change the transistor :)

It may be easier to buy 8Ohm speaker. You need a matching transformer, which will probably cost at least $200. Or look for a used Weber Z-matcher.

Is it breadboard, stripboard, regular pcb? Potentiometers on wires? Is it first stage with the 10u cap? How about making it three stage circuit with less gain in each stage? Can you post a schematic?

Can we have the Mystery Meat schematic please? ...and Scabbard too?

Some more stuff from Bajaman. There's power amp sim in every schematic. https://www.freestompboxes.org/viewtopic.php?t=28874 https://www.freestompboxes.org/viewtopic.php?t=28926 https://www.freestompboxes.org/viewtopic.php?t=28915 https://www.freestompboxes.org/viewtopic.php?t=28884...