Ok so for the last year or so I've been looking for an ad900 as I have an ad999 and love it. My grand plan would be to run a stereo signal with each analog delay going to separate amps. Over the past year the aussie dollar has plummeted making it quite a bit more expensive to buy from the states, but I've still been looking on reverb and eBay. Then last week I found a ad900 in Sydney for a good price and jumped on it, it's a 2 chip mn3005 version and it came today. Sounds smooth and rich, it's everything I'd hoped it would be. I AB'd the two for about 10 mins or so and the descriptions I read online are spot on. The 900 is smooth and I could run the mix higher as it sat perfectly beneath my playing, whereas the 999 is a grungy but a bit brighter sound prefect for more driven tones. Even though they were in series not stereo, I set the 900 up for a 1/4 note and the 999 for a dotted 8th and it sounded magnificent! Who needs the Dig.