Late response to bdp’s post of 9-19. Static charge, great or small, will instantly distribute itself evenly across the exposed surface of an LP, the side that is in play. Therefore the concept that the Hudson brush neutralizes the LP surface that it is traversing or has traversed, while the untouched grooves between brush and label remain fully charged is faulty. The better way to think of it is that the brush, as it travels, is constantly reducing the average charge on the surface taken as a whole. So when you’re done, the surface would measure no or low static charge, but during play there was gradual reduction in charge as the brush moves from outer to inner grooves. But charge wouldn’t have been neutral throughout play at any time.