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Google suggests it means “low drop out” and is a step down voltage IC of some kind. Not going to give me +- 15v from a +9v supply

Cheap option get the mini Tonex thing or equivalent and go straight to PA - but I'm a bass player so what do I know?

It feels like the kinda thing I *should* have been able to search for and find out! The Aion L4 preamp I built used one of these rather than a charge pump. One of the times the much maligned Aion daughter board made sense as it was mounted between the foot switches facing up.

will be. I've mostly ended up using musikdings kits of pedalPCB things - upside is less stuff you don't need, the downside is less stuff to breadboard with so weighing up if its worth it vs building another frequency interchange and feeding it more power (option 1 above)

Thanks Chuck! That helps :) Basically the last few months I’ve built both the frequency interchange filter and the skeptical preamp, and liked the sound of one and the headroom of the other (for bass) - my crazy plan I am half thinking of bodging taking the middle filters of the frequency...

Stupid Q follow-up - is there common examples of circuits that need +- voltage vs VREF? And/or where should I be reading up on this to answer them in my own? Google searches show solutions and different power supplies - but less of the whys

Ah ok. So the designer would start off with the power supply and then design the circuit - or start off with the circuit and then build a power supply for it? I realise this is the questions that would be covered in term one lesson one of an electrical engineering course but my google searches...

So I’ve built a load of pedals, Mutron clone, Aion’s L4 preamp PPCBs skeptical buffer who have used bipolar power supply’s. Most others use a monopolar power supply (if that’s what it’s called) +9v and gnd with the vref being fed into the input … I get that bipolar power supply is how older op...

I’ve done pcba before but just done resistors, diodes and some ICs and ceramic caps- always been unsure if film caps can just be switched for mlcc. Have you used JLC PCBA for electrolytic?

Corrected for you…

I work in marketing, and as a graphic designer have the ability to make really really pretty things. I’ve also fallen into product design things before and the last build of a small batch of things I sold were beautiful wee things that looked amazing and I was designing in quicker assembly...

Oh - ok :( seemed a good idea!

quick question that's possibly so obvious that I've missed something... Tayda's PPCB drill templates are all listed as "sold out" - why? when do they become available?

Compare the schematics and what is controlling the decay on the meatball … look at R17 on the Lumitron …

or B string if you're that way inclined

it's interesting - on a compressor you might want more bass in the signal, but less into the detection circuit so the thump of your E string doesn't over compress...

spb I saw they had reissued them as something similar - what’s wrong with the new ones?

I'm having issues finding real Lumberg DC jacks. The mini ones, Are any of the non-real ones ok or is it a crap shoot?

so in this situation they (not chase bliss) use it to digitally program a set of analogue audio circuits. So turned off it’s a load of components on a pcb with a load of gates, when it loads in the firmware an analogue circuit is created. Change the firmware and a different circuit is created.

I'm still waiting for the Quake Fuzz @Robert is working on (maybe called something else, but that's what iD did after Doom2 isn't it?) :D (stupid name suggestion No. 23)