My come-uppance was soon to be at hand. I witnessed the improvement by the 'magic' brick to first one system then another and then another and my laughter was replaced by a worried frown. I heard it; but did I believe it? The influence of the steel brick is unpredictable varying from system to system but basically it seems to reduce the 'grunge' level when it is sitting within an inch or so of a mains transformer. Sounds speak from a clearer deeper background; stereo imagery becomes slightly less confused; instantaneous dynamics seem a little more er dynamic; levels of HF hash or graininess are reduced. We're talking subtleies here but having tried it in my system I don't want to give up the benefits. KK for example noted a reduction in background noise on the disc input of his counterpoint SA-7.