heya –

yes pro tools aux io with h9000 through USB.  clocking the h9000 with a wordclock cable from my lynx aurora.

im out of the studio for the day but i did simple through algorithm tests and it was in the neighborhood of 2600 samples.  it was also not compensating for my pro tools playback engine delay which was set to 1024 samples.  when i changed the buffer size smaller, the latency changed accordingly.  i did not test for different sample rates but think this would also change it.

i tried to setup pro tools aggregate device but i couldn’t pass audio through usb.  gave the error that usb clock was off.