paulsikivie

I've been going back and forth with a nice Apogee Tech Support guy about the same problem (Ensemble, iMac, Mountain Lion, clicks and pops intermittently in recorded audio, regardless of buffer). After a bunch of other stuff, I just tried something that seems to have fixed it. I used the Ensemble firmware updater to downgrade my Ensemble firmware to BCD 1.9.29 and FPGA 1.34.1. You just go to the options menu and pick "allow downgrades." Worth a shot. You'll have to do some turning on and off of the ensemble and a restart and closing other programs is required, as are detaching everything else from the firewire bus.