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Vref resistors won't make a difference and I wouldn't try for higher values for C14 for increasing bass. Increasing it to 470-680n will only make it act at even lower frequencies, which will make for even less audible changes. If anything you might want to decrease it to start shelving on a...

Does it sound correct if you swap the parts back to stock on your breadboard? There's always the chance of something else being wrong or not making contact. Else, R22 and C23 form a filter and swapping R22 to a much lower value will affect the tone quite a bit. Try bumping up C23 to 2n2 and see...

Use sockets

I literally can't see what you mean.

Does it have to be 2 of the same? If not, here are some boutique combos: TS + BB TS + Guvnor/Crunchbox TS + Timmy Zendrive + Timmy ODR-1 + Timmy ODR-1 + BB Klon + OCD Klon + BB TS + Rat

Having built "stripped down" kind of Klons, the issue is kind of headroom and (surprisingly) oscillations. With the gain high and higher forward voltage diodes (in one of them even 4148s, in another one LEDs), the circuit kind of broke out into crazy oscillations at higher gain settings. Also...

Buffers aren't NECESSARILY superfluous. Especially an output buffer after the volume control gives you consistently low output impedance compared to the usual volume knob configuration.

Not sure but having built the thing on vero previously, I couldn't be arsed again to test transistors that make it sound "good" or at least "correct".

It's not "just a tonebender" in this case but a circuit that emulates a tonebender using silicon transistors following a distinct topology and using not 3 but 4 transistors. The chances that JHS would come up with the exact same topology and values from engineering a fuzz to sound like his exact...

I might be tired but I'm getting a headache trying to make sense of this post, sorry. There's no tweaking/biasing/whatever required, you can drop the Boss discrete op amp into basically any existing circuit that uses IC op amps and it will behave like an op amp but, in fact, sound different. I...

With the rat you would usually go for LEDs as always on option and put either silicon or germanium/schottky diodes in parallel, which would "overrule" the LEDs, giving you 3 clipping options.

Actually, I'd be curious to actually build a fully discrete LM741 DOD250/Distortion+ just for the sake of it.

I'll stick with it: complex discrete op amps may not be worth it, but the boss style ones that require like 3 transistors, 3 resistors and a cap can be pretty cool for some applications. They are less compressed sounding and also clip nicer than ICs.

PCB number 676 is definitely not coincidence.

Played a waza one lately and it is actually pretty awesome. Custom mode takes out the bees and if you don't fuck up EQing it, it's a pretty awesome metal tone. If you can't make the waza one sound good. It's a skill issue.

This seems... odd? Schottkies in parallel with LEDs would basically make the LEDs useless anyway, as only the lower forward voltage drop diodes will clip.

@Robert so is it a part for part Klone with a Clipping switch?

Most likely it's an issue on your side but please list which exact ones, what issues and show pictures of your builds.

Unless your TL072s are some very weird kind of fake, they shouldn't be the issue. You either have something weird going on with your setup, or some kind of consistent build/component related issues. Could you by any chance post pictures of the populated PCBs of all thr pedals you mentioned?

Are you daisy chaining them or using a non isolated power supply?