If I choose the "digital" option, will this let me tap into the main digital processor, and basically gives the same results and settings I calibrated for through the digital inputs? [I understand that an AD conversion will takes place before this.]

Also, if the main L/R speakers are set to large, would the center speaker's bass[set to small] content go to those, or to the sub directly?

Is the 990 different on any of those situations?

Thanks!