I was in optical sync mode when I had the digimax LT hooked up if thats what you mean. I have a soundcraft spirit M 12 also, and when I switched to recording through the pres on that..it was a huge improvement over the digimax LT preamps. If the A1-3 uses the same converters than thats perfect. I'll just run the 9-12 channels on the soundcraft through the first 4 channels on the alesis. I don't want to buy any multi channel digital pre, rather spend the 1000 bucks on a good analog dual or mono mic pre (i.e. avalon, vintech, trident) and slowly build off of that. Thanks for the info!