Another newbie question, but has anyone come across a video of an SF-2 in action? I've heard a lot about them, but I'm yet to hear what one actually sounds like.

I am also curious, been here going on 3 years and never even thought to ask about one(rack units usually aren't my thing but I've been thinking again....) so I'd love to hear one
 
~Taylor

I have some soundclips about half-way down this thread.
 
Also, check out these two videos:
 
Original recording
 
With SF-2
 
Hope this helps! I have another track where I used the SF-2 on a different Rickenbacker bass - I'll see if I can put together what it originally sounded like.