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Looks like a 50 Ohm BNC connector (the 75 Ohm BNC types are slightly different. See BNC connector ).

On regular PCBs you just cut the leads after soldering. In case you have to desolder a component that is way easier than on a perfboard if you bent the remaining leads to make connections to other parts. With a proper solder iron excessive heat on components isn't a problem.

Using the leads is the better option, unless you plan to replace components. Have a solder sucker pump and wick ready. Additional and longer connections can be made using insulated wire.

Seems I actually have to consider such a thing.

Lacking a proper camera for filming my setup, I'm looking for a smart phone holder that doesn't obstruct the lenses. Anybody aware of a corresponding device that can be attached to a stand?

And another interesting project! Any demos yet? I'm still wondering how the Landau Density Matrix works with just two knobs. In contrast to my initial infos it is using transistors and not MOSFETs (google simply combined the results from two different pedals 😖).

These rectifier diodes could be selenium ones, which would explain "SE" instead of "SI".

Which transistors from the BC series would work as alternatives to the 2N5088, because these are much more expensive than e.g. the BC547C ?

Using a Boss RV-6 with my modular stuff to get a stereo signal was an awesome experience. Otherwise I like the Tape Delay (DIY) for what it is capable in my pedal set-up. It really depends on what kind of reverb effect you're after.

My quick search revealed a different T7 transistor tester, only. Anyway these boxes are (mostly) "implementations", respectively "ready to use products" of open source projects.

Indeed, Same observation here. Seemingly that's a different (newer?) firmware. Shouldn't be a big deal to update that.

I also just used three SMD J201 from the same batch in my build and they were pretty close according to the measurements of my T7 tester. I can hardly imagine that pedal manufacturers match them. So this was my first Fuzz, but I'm still looking for one that sound like that (without buying the...

Thanks for the recommendation on how to improve the spray painting. I prefer powder coated enclosures, but these always sold out at musikding.de and they are way more expensive at other domestic vendors. Thus I ended up do the painting job myselfs. Interestingly the somewhat larger (but thinner)...

Do vero boards count as build report? If so, here's my Nein Fuzz. Somehow I struggle spraypainting these kind of "raw aluminum" cases. Despite applying metal primer first, the paint doesn't stick so well. Put a label in the wrong place, removed it and the paint came off with it. So I ended up...

A common modification of the TR-909 Bass drum uses a similar trick: Here the fixed resistor R52 is replaced by a 10k poti to introduce more distortion. Pitch the bass drum as high as it gets and you've got instant Teckno.

I guess a higher resolution around +/-0 plus maybe a more pronounced change of the background color when fully tuned (e.g. red to green), would come in handy.

A major modification seems to be that one (no tone stack): Landau density matrix Upvote this one, guys!

The data sheet for the TL072 and OPA2134 state maximum power supply at +/- 18V, whereas +/- 15V for the NE5532. Thus the later is somewhat boarderline here.

Definitely. TL074 is general purpose, NE5532 (dual OpAmp) is Hifi, OPA4134 is HighEnd.