There's a setting on my Marantz M-CR610 called Dynamic Bass Boost. This is something I've only ever seen on portable music players, like CD walkmans and even further back, those big old plastic music box things with handles people used to carry around everywhere. So I'm curious to see it on this new Marantz. Is 'Dynamic Bass Boost' considered low-fi? How does it actually work? Is it boosting what's already there or doing something else?