I have a 15 year old BBE, the "383", which includes their Sonic Maximizer technology, though not by that name (the call it the "BBE Process" in this incarnation). 5 band EQ, compressor, etc. It still works great after all these years, and works with all my basses from passive to active to onboard preamp.
Don't know how it compares to their newer offerings, but if I had to do it over again I'd get one of these in a minute. From a cursory look over at Musician's Friend it looks like the BMAX has many of the same features as mine.
-- Sam