Agree with your comments about the plugin its really boring. The side chain does act differentially with a wound oscillator and I noticed a difference in sound and setup. I'm not saying it is better than the chip, but it is more true to the original design. If you scope them out they are completely different waveforms. Considering the is a PWM compressor the way the signal is modulated is going to effect how the compression sounds.Hi, I dont have an original analog old one and have never worked with one. So I can only compare it to a plug in. They are really close! The plug in does a little bit more static harsh thing in the highs. But this fantastic pushy thing, especially on snares, is very similar. The impact of the analog unit is more fatter, broader, does a more "musical integrative" thing. The plug is also nice but more boring.
Abe's instructions are working well on the most settings. They make sense. Things like Meter setting and starting Point of the Threshold are not perfectly written down there.
I can also recommend to take care with the transistor legs and directions (look at my pictures,...), use the correct ratios of the transformers, or it is not able to do a calibration of the compressor because it playes in the wrong ballpark - that is what I experienced at my first starting tests. Setting the correct starting point was also very important or this piece sounds a little bit nasty.
If an inductive "chopper" Oszillator can give an additional improvement,
"more original", I dont know. But for sure it is worth to try it, why not. But nevertheless I think the TI TLC555CP Oszillators are easy, cheap, and they work great in the build..
Sorry for the bad quality of the comparison
The costs was no real difference