I managed to install my HDSP 9652 and everything syncs tip top records without pops with several standalone units sending digital via adat port. VST added latency is near zero. I am no loger a"firewire producer" lol.

I hate clutter and rarely need more than 4 channels out and wanted to buy an extension card with 4 analogs out and send the mixes to my Alesis headphone amp mixer is there anything I should worry about to make sure I have the right bios version of the card etc?

I am also interested in RME HDSP AI4S-192. Are these cards compatible with raydat too?  many thanks Jackie. And finally, can I use 4 analog in card and 4 analog out card on the same HDSP card? Are the AD converters on a RME HDSP AI4S-192 any good?

Many thanks Jackie