This is a big tweek, for real. It really transforms sound, betters the stereo image, soundstage, improves clarity by restoring waves. You can search it on the net. I am using a Cambridge audio thru a BBE 482i maximizer & i am inlove with it most of the time, except when its not maching with a specific cd, overemphasizing high frequencies, makes it little harsh, so i switch it to standby. But most of the times it works and its doing a big difference on sound not obtainable by any other equipment as far as i know. Its not like adding treble or something, its a phase correction.
I know there is people dont like it, but i think they are overcharmed by the i of being purist and dont really listen to whats happening. As i said i sometimes put it off when i think its not helping, but in most cases it does. Anyway i would like to hear what others think and debate furthermore.