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"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
(I use ods as clean boosts but not expensive ones)
Sounds nice, though.
It does sound great, convincing fat jazz tones.
I think it's a nice Jazzy type clean boost circuit, the opamp, jfet and tone stack all colour the sound and add something extra.
Thanks
Guy
Studio: https://www.voltperoctave.com
Music: https://www.euclideancircuits.com
Me: https://www.jamesrichmond.com
Football is rubbish.
I removed R4 and R5 and put in a trimmer, so I could adjust for a nice clean fat sound. I put a fixed 100K resistor in the feedback loop. Give it a try, you might like it.
Sorry this isn't a criticism, just clearing up what may be a misunderstanding in either my reading of this read or what you did. I'm a bit confused by what you mean by modding the tone stack. C1 & C9's corner frequency in the Rat circuit is already so low that any increase would be inaudible. C8 is the only capacitor that effects the tones tack per se. Any change in range your are experiencing is from the resistance changes in R4 & R5 - so you are not changing the range entering or exiting the circuit, but moving the peak of the boost range in the op-amps feedback loops.
Obviously if you are building something from scratch then it doesn't matter what values you choose to alter but just wanted to clear up that if someone has a pre-existing Rat and thinks that changing C1 & C9 will open up the range in any way, it will not.
The "Tone" evidence is in the sound clip, what Rat pedal sounds like this?