Any analog crossover introduces phase shift at the crossover point, whereas doing it digitally *can* be done without any phase shift. The actual "at-the-ear-in-the-real-world" sound of analog is *generally* more pleasing than doing it digitally. Every time you use an analog "tone control" on a preamp, or every analog equalizer on a mixing console introduces phase shift, but to the ear, the effect is more pleasing than a digital equalizer or filter. I realize this is a controversal issue, but all I can do is point to the overwhelming popularity of analog outboard equalizers in use in recording studios, which to most ears sound more natural than digital equalizers.