Know anything about the BSG Technologies QOL?

Hi there, I just saw a local dealer advertising this on craigslist, They wont tell you anything about it except it works, it half sounds like snake oil and half sounds like it could be something.

They claim it is all analog and retrieves inner detail and has the "WOW FACTOR".

My guess after talking to the guy is is might be disgned around smoothing out microphone curves maybe? or sending out a ton of above 20KHZ info to do some pshycho acoustic/room type thing?

I'm just tripped out they wont tell you anything except, well set it up, if you like it awesome if not dont buy it.

I am genuinely intrigued to see if its truly real and if anyone has expreience. It would be nice to save a long drive to hear something or have something to look forward to on the drive.