Believe it or don't believe it. Try it or don't try it. Open minded or closed minded. It's no skin off my nose. I can hear an effect, sometimes good, sometimes bad. Not an illusion at all.
I performed a test for a fellow audiophile this weekend when he stopped by. I took 2 small plastic cases that had crystals in them and placed them on the top of my turntable step up preamp. The soundstage shrunk and was immediately constricted. When they were removed it expanded tremendously. No question about it. Not subtle at all. Using something like a weight in their place yielded no result at all, so it wasn't anything to do with vibration dampening or the like. Obviously in this case they caused a bad result, but an immediately audible result nontheless.
I performed a test for a fellow audiophile this weekend when he stopped by. I took 2 small plastic cases that had crystals in them and placed them on the top of my turntable step up preamp. The soundstage shrunk and was immediately constricted. When they were removed it expanded tremendously. No question about it. Not subtle at all. Using something like a weight in their place yielded no result at all, so it wasn't anything to do with vibration dampening or the like. Obviously in this case they caused a bad result, but an immediately audible result nontheless.