I need to work on 8 channels projects (8 inputs/8 outputs) and I was wondering if I can stack a Stereo card on top of a octo card or eventually even stack a octo card on top of another octo card to extend the inputs capability.

If this is the case, stacking two octo cards will give me a 12 input channels capability?

There will be extra delay due to the fact that we have two distinct ADC circuits?

Thank you in advance for your reply,