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Motivated by the new aion traces, a question has emerged. If I'm not horribly mistaken (wouldn't be the first time), the buffers in those Cornish designs are bootstrapped emitter followers. I know this allows for higher input impedances, but is it worth the extra effort for a guitar pedal? Thanks!

I have some smd jfets on their way and I would like to match some for a phaser. How do you guys suggest I keep them in place?

Built myself an orange squeezer with a threshold control as implemented in the Orange Smoothie. Nothing much to write about this one, but it does the job and is quite silent for a compressor. Will probably go to the pedalboard. Did some linocut for the artwork, but used the rough side of the...

Hello everyone! I've built an engineers thumb according to ValveWizard's schematic (schematic here) and it compresses as it should. However, depending on the settings (mostly higher ratio and lower threshold combined) I get this weird artifact where it feels like the volume (and the noise) is...

A few months back I've breadboarded a fet-conversion of the preamp of the Rockerverb. @temol has helped me a lot and in the end we've arrived at what is, in my opinion, a great sounding circuit. I won't claim it's an Orange in a box or anything like that, but it sounds good, which is more than...

A few weeks ago I've decided to breadboard a drive/preamp taking inspiration from the Sunn Beta. It's the drive section of the Beta, with the second half of the gain pot hardwired at max, converted to single 9V operation, followed by a baxandall stage. Today I've finished boxing it up. I love...

For some years now, I've enjoyed the sound of the Sunn Beta amps, but the EQ section was always a nightmare for me to create an etchable layout (I like etching my own boards), so now I've finally decided to breadboard a stripped down version to see if it sounds any good. Since I'm already...

Are you guys (especially Chuck, since I had originally posted it on the Boneyard) familiar with the Maestro Fuzztain? It uses the N-channel mosfets of the 4007 in parallel as a variable resistor in the compressor part, if I understand it correctly. Do you think there is a very solid reason for...

Following a previous thread (orange solid state preamps), I've decided to breadboard the dirty channel of the rockerverb with jfets in place of the tubes. Plugged everything and had nothing but noise, just to notice I had left the gate of the first jfet disconnected. With everything properly...

This one is nothing revolutionary but sounds amazing and was fun to develop: idea -> LTspice -> breadboard -> eagle -> final build I've always liked the way jfet boosters and overdrives sound with solid state amps (the kind of amp I play the most) and so I've decided to try some MuAmp (in large...

Hello everyone! I've been a bit obsessed with solid state preamps, and recently I've found the ones that employ an OTA for distortion (e.g. the Lab Series L5 and the Peavey Mace). From what I understand, they benefit from the soft distortion characteristics of the differential input. What I fail...

Built a bellows with a couple 2n3904's forming a darlington pair instead of the MPSA13. Really nice distortion and fuzz tones (and some cool overdrive tones, too). Very simple circuit, but really effective.