Hi I'm running a 2011 mac pro, 10.6.6 o/s, and a Pro Tools HD2 running version 9 software. I have a few potential clients who would like to book the studio, but they work on Logic systems. So, I've bought Logic Pro 9. I've been trying to set it up - I've read the little blurb in the 'help' menu, which essentially tells me what some things do but not why you'd do them, and have come up stumped. Running with Core audio, (preferences/audio/devices/coreaudio), the system seems to run fine. I can play back the various logic 'songs' i've been given, and work away quite happily. One thing I did notice was that in running core audio, I was restricted to only 8 I/O - is this normal? I then tried record something, because while I know the clients won't be recording any bands, they might want to record a vocal or guitar. With the buffer set as low as I could, latency was very poor - unusably poor. Is this to be expected? I understand the signal flow through the TDM cards fine, so I can understand that routing the signal from the TDM cards off to the host based mixer and back will take time, but can it really be worse than say a USB or firewire interface? (apparently so in my case). I've tried enabling the DAE tab in the aforementioned menu, but it doesn't seem to make much difference. Enabling direct TDM causes parts to stop playing back, and (what I would refer to as) sample and tick based tracks drift apart from each other - very disconcerting, and I have no real idea why... Also, regardless of what box I have ticked, the mix engine still exists in the host computers CPU, yes? Logic cannot/does not transfer it's mixing and routing engine into the TDM chip when selecting DAE? If this is the case (that the mix engine exists inside the host CPU), is there a way of enabling direct monitoring, and somehow provide a low latency output to someones headphones? So basically, if some fine Logic aficionado could explain and reassure me about the above I'd be so grateful. I just don't know what Logic should be able to do with Pro Tools hardware.