I have a PreSonus Inspire interface, which worked fine for a while, then just quit. I tried everything I could think of, finally gave up and found a cheap Alesis USB interface, which works OK. Thinking that the Firewire connection and PreSonus mic preamps are higher quality, I bought a PreSonus Firebox on Kijij which I tried, to no avail. In both Presonus cases, the firewire light resolves to blue, indicating that the Firewire is synched. but I can't get any signal to pass to or from the computer. With the Alesis USB, I just plug it in, and it works with GarageBand or Audacity. I also have Logic Express and Cubase LE4 - I've tried the earlier Inspire on both a G4 and a MacBook Pro. Pretty much the same results. Alesis USB works, PreSonus Firewire doesn't.
I'd like to resell the PreSonus boxes, but I feel I need some rationalization, in case the new buyer asks why I have these two pieces of equipment, but use a supposedly lesser quality unit. Do youse guys have any prior knowledge of bugs in the PreSonus/Mac interaction?