I'm having a strange issue with my Zero8 that just started. I am getting a nasty crackling noise (sounds like digital clipping) that is only present when using the firewire bus to output sound. I can run external sound devices through the mixer with no problem. All the software and zero8 busses report totally fine levels that should not be clipping, so I am very confused. I have tried it on multiple computers, changing the sample rate, buffer size, etc, all with the same problem.
Any suggestions?
zero8 fw v1.6
2.4 ghz macbook pro
OS X 10.5.6 (Combo Updated)
2gb ram
320gb hd