The fun of the old analog equipment was all of the filtering you could do. You can do all that in modern digital equipment, of course, but somehow it sounds different, even when the exact analog filters are being modeled. I think the reason for that is that you can give all digital stuff a really hard edge, and so people do, and that's why most modern digital filters sound different from old analog filters - they are used differently.
Here's a tune with lots of slow filters.
© 2005 Stephen Clarke-Willson - All Rights Reserved.