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Musikding sent me two new THAT4301 retrofit, before got it works fine. I'm not sure how, but I guess I got two failed chip. Then I wasn't sure if this new pedal worked so fine as my first Muzzle, but my friend was happy about it, and he tried the first one because it was for another friend we know.

About mods... I really can't find the "trem mod". It appears in the Devi Ever forum, and I guess it connects two points in the circuit to get a sort o pulsing/tremolo effect, but I can't find the original image nor any description about it. Probably I will not include it in my building (never...

What mods? All! I really getting fun with that, I'm still trying everything and I will include just the ones I like more, considering the space using a 1590BB enclosure. The mods I like now are: - Clipping: stock, LED, and asymmetric two LED and a silicon diode; - Mid boost: a pot in series of a...

Thanks for the suggestion. I just inserted an NJM2904 in my Tayda's cart!

I solved the issue moving the positive side of the diodes before the first op-amp stage from the feedback loop of that op-amp. (THe solution was in that link, indeed.) I still have a lot of volume, that is not a bad thing. The taper of the Distortion pot is not pretty identical to the original...

I'm reading that page, thanks. My issue could be something about it. So I guess the problem maybe is something about the IC, even if I can't understand how other guys built it with satisfaction. I'll try to solve it.

Hello, I'm building a Boss DS-1 replica with a lot of mods and fetures, just for fun. I built it on veroboard layout from here: https://tagboardeffects.blogspot.com/2014/10/boss-ds-1-distortion.html Schematic: I started from the stock project, with just a mod: I moved the jumper between pin 1...

Yes, the one over 700, is very suspicious. Anyway, I'll try to measure it again, and see what exactly do and what value it reaches. :D I'll measure even the two around 170 a bit unstable. Anyway, yes, I'll test it with the fuzz circuit, just to see what happens. Thanks!

I'm not sure. It's just those three. all the other 47 are stable. One has that very high hfe, over 700, I didn't wait until it stopped, but it was keeping going up, and not really slowly. The other two are have an hfe value pretty high, around 160, 170, but again, I didn't wait until that was...

I got the transistors, and I started to measure the hfe. GT309B, with my multimeter, go from 85 to 182, those are 50pcs. But I found three weird measurement with three of them. A pair of those start from a value and keep going up slowly for several seconds. Another starts with a higher value...

I use low ESR electrolytic capacitor, cheaper or good brand, in the power filter. For signal, when I really have to use higher value cap, common electrolytic caps. For a better performance I use electrolytic made for audio signal.

I hoped I wouldn't worry about leakage, (somewhere else I read about leakage with pnp transistor couldn't be a problem, usually). But do you advice to select the transistors I'll buy by hfe and leakage? In this moment I have in my cart GT309B (60...180 hfe), and I have to decide about MP42B...

I still need a little help, please. I'm starting to select my ideal range hfe transistors for Fuzzrite (but even more other fuzz, too, because there's a lot of pieces for just one fuzz pedal :D). Thanks!

Thanks, Pedalbuilder! Do you mean that the hfe I read in the description is underestimated than the one I'll read then on my multimeter? For example: MP42B PNP ~AC128 OC75 - Forward current transfer ratio (hFE) 45...100, it could be... +10? +20? I guess that is important to choice the most...

I'm look at this seller you mentioned, thanks. Well... I have to say a new transistors world is open in front of me. There's a lot of choice here. I'll buy some stock where I could have the fortune to find those hfe value. There's some particular transistor I could use in the Fuzz Rite circuit...

Hello, I'd like to build once a Fuzzrite Germanium transistor version. But every time I stuck because I don't know where I can find a pair of good transistors. The original transistor are: Q1 - 2N2613 - PNP - hfe over 120 and Q2 - GN408 hfe about 65. Catalinbread Fuzzrite has a 2N404 and...

I got twice a defective chips. The pedal doesn't work fine, especially with the four cable method in the FX loop, the one that should be the best. In general in the FX loop it doesn't work good at all. I couldn't use the noise gate, because it cut hum and sound. The first one I built the...

I didn't answer early, but I'm going to order a kit by Musikding, so I can't order the pre-programmed eprom separately. And it's too much expensive order the PCB and the eprom from Europe, I think. So... a kit, and it's pretty fine for me, I just have to decide what delay is better for me. I...

I find very interesting the Hydra, indeed, it was my first choice and I think that is the better. Later I change my mind about to build it now, I prefer something more "standard" and easy, and I don't want all those switches. (Even if I can try the switches and fix them with jumper, but it's a...

Hello, I want to build a delay pedal, something more than PT2399, but I'm a bit confused about the version and how them work. I think I'll build one of these: - D3lay - https://www.pedalpcb.com/product/d3lay/ - BuGGFX Daydream - https://www.pedalpcb.com/product/daydream/ I love the idea to...