[sdiy] TIS97 transistor replacement

[Kenneth Martinez]

Playing with Moog ladder filter circuits, and I thought I'd try out the one on
the Mini's schematic.  It uses TIS97's in the ladder, and my favorite suppliers
don't sell those; I've got the data sheet but haven't found a cross-reference
that shows a good replacement.  Other ladder filters I've seen (Tony Allgood's,
etc) use different transistors.

Can I get away with some other common audio NPN, e.g. 2N3904, and still get
about the same performance (assuming I match them)?