If everyone is curious about what's inside, why doesn't someone open theirs up and take a look (or even some pictures)? It should be pretty clear if there is a gain stage in there or not. Is it sealed or potted solid to deny access?
Anyone HEARD the qol 'signal completion' device?
An ad in TAS... touting this box. I remain skeptical but would like to know what your impressions are if you have heard whatever it does!