My experiences with my Aardvark Direct Pro 24/96...
Firstly, I use Windows 2000 on an IBM Netvista with 512MB RAM and it is tuned primarily for use as a DAW with absolutely no extraneous software running silently in the background.
The motherboard comes with a very fine SoundMax Audio interface which, in July of last year, notified me via the internet that new WDM drivers were available. I installed them and the PC has worked faultlessly with SONAR XL v1.30 ever since.
In August of last year I purchased via the web Aardvarks Direct Pro 24/96 - but at the time, Cakewalk's Hardware guide did NOT note who did or didn't provide WDM drivers and who was, or wasn't compatible with Windows 2000. The card cost me $1,600 AUS by the time it arrived at my front door here in Australia. In ignorance of course, I tried to install the card and the appropriate software drivers and I met a brickwall straight away due to the software bot being Windows 2000 compatible. Accordingly, since August of last year my Aardvark 24/96 has been of no use to me.
In December, I attempted to use the Aardvark Windows 2000 Beta drivers for the Direct Pro 24/96 - and the result? My hitherto stable machine went absolutely heywire. Thank God my IBM had it's weekly OS photoshoot which allowed me to reinstall a previous version of the OS configuration. I removed the 24/96 and decided to wait for the official debugged Windows 2000 drivers.
I went back to using my standard SoundMax D/A converters and they worked just fine thank you.
Last Friday night I downloaded the official Windows 2000 drivers and tried once more. I installed the card and did everything as per the company's specs. Please note that I'm a Systems Analyst by trade and I've been writing software for some 14 years so I know my way around PC's. Most importantly, I know when something is out of whack.
And the result? After much poking and prodding and being able to work out what would, and wouldn't work, I was able to record audio thru my Direct Pro 24/96 and I was quite impressed with the card's silence - that is - because it's shielded in a lead casing it's really quiet from extraneous electrical noise when listening thru headphoes.
HOWEVER.... when I opened existing SONAR music projects, even after ensuring for the 15th time or more that every possible parameter was tuned to Aardvark's recommendations, no matter what I did, my CPU consumption was just plained max'd out no matter what. So I would deactivate audio tracks looking for tell tale signs of what the culprit was/is. My other audio software was killed in the arse too. After much experimentation, I reached the conclusion as follows...
The Aardvark drivers simply are NOT WDM drivers sadly. They are MME drivers which are carry overs from the WIN 9x era. And quite frankly, they are dreadfully CPU intensive. Moreover, they are dreadfully thread priority whacko too compared to my SoundMax WDM card. In short, I pulled the sucker out and wrote off my $1,600 as bad experience.
In closing, anyone thinking of getting Aardvark's products? Seriously think again... until they are prepared to bite the bullet and design '100% true WDM drivers' you're actually sending Windows 2000 backwards by forcing ALL of your audio drivers to use MME technology. Not worth it I'm afraid...