Re: BBE Sonic Maximizer
The theory behind the BBE S/M is that the phase or timing of your bass freqs and treble freqs are "off" when they leave the speakers and the BBE S/M corrects this phenomina, adding clarity to your signal. They have two controls, lo contour and processing. The lo contour adds bottom end and the processing seems to add top end and clarity. You can get anything from a bottom end push with added clarity to a very scooped and thumping Hi-fi sound from them.
Used sparingly in a guitar rig you can pull added clarity and bottom end, used too heavily and your tone can get extremely hi-fi sounding. Most guys I see running them tend to over process with them and end up with a too bright and somewhat solid state tone from them but if you go easy on the controls they can tighten up things quite a bit.
I have a 362 in my Mesa rack and a 482 in my recording rack but they dont see a lot of use. As a tool they can be nice, as a crutch around marginal tone they sound like garbage.