I have found a few youtube videos of negligible quality and the difference was pretty unnoticable IMO. IDK, I mean the story I heard from users is that it would make a crappy amp sound like a good amp, relative to whether or not you put it in the FX loop or not. The clips are not much of a comparison so I can't really judge for myself with my own two ears just yet. I don't really understand what it does really. The BBE website makes it sound like it makes up for bad speaker response or something and restores lost signal and blah blah. What is it's functionality? Is it the workings of a clean boost but split up into Bass and High instead of flat frequency response? Is it really only a crude 2-Band EQ with a great marketing team behind it? It's $99 so what do you think. Worth it or not?