> According to Apple, it'll work with a G4 but you might get a 20%
> boost instead of an 80% one.
The price for a G4 is about 4:1 too ($2000 compared to $500) - so a proportional amount of power/$.
I am wondering about the ethernet speed however.
> Do they have digital audio out or would it require a USB
> or firewire audio adaptor?
I don't think you need another audio card. I think I asked this on the LUG before and was told the audio is routed back through the ethernet. If it were only midi connections, then what good would a node be? You can hook up multiple computers with midi already - maybe even PCs & Macs running different programs (Logic, Cubase, Performer, etc.).