I have just obtained a "pre-production prototype" of the original MIT Z-Stabilizer. I'm very happy with it! It has an excellent effect on my Spectral DMC20 and DMA 180--better than the original Z Stabilizer. I'm hoping somebody knows what in this prototype---or can help me analyze what's inside it.I will open it up if someone can interpret what I find. (It's quite amazing the improvement in nuance, dynamics and emotion it provides..)
I had the original Z Stabilizer that was a big box with no outlets. You just plugged it in to the same outlet as your other gear. I believe it was packed with capacitors... It did improve the sound, IMHO.