my oh my: a lot of shilling going on on this thread. I have used Mad scientist, Acoustic Revive and a few others. Mad Scientist was the most effective
Shilling is where a dealer, vested interest or the manufacturer itself come in and pretends they are just retail end users. What evidence do you see of that here? Do not throw such accusations about.
@mijostyn You have 6500 posts but pretend to act like you are a newbie who just stumbled upon an audiophile engineering debate. You have the experience to know the misc-audio sub forum has threads for thousands of these subjective products and tweaks like contact enhancers. So act with some common forum etiquette and go rant about DBT tests and psychoacoustics somewhere else.