This is the BOSS GS-1.

This is the first effect i have faild to bet to work as expected. I have tested and cheched every ting. At first i did not have the FET on the BOM so I tyred every FET I had, about 10 different ones,  combined with  zener diodes from 4.0 to 9.1V. It almost works but in a very narrow setting and not that long swell I have heard form sound samples. I eventually ordered the correct FET. It helped a bit but not at all to my satisfaction. So now I have an effect that does works but not to the full extent. That is frustrating since I don't know how I shall trouble shoot it cause it does work. I have quadrupole checked every component value and solderjoints. So this is the first build, from about 30, I have to toss in my towel on.

I would really like it to work because its a cool effect. Its the opposite to a Compressor. It starts at zero vol and slowly raises the gain over time (1/2 a second to one second or so) . You can get quite strange backwards sound trough it. I found the project on General guitar gadgets but didn’t like the PCB. It was too large. I wanted it to fit in to a Hammond BB so I redraw the PCB.