DSpeaker Anti Mode Dual Core 2.0 Room Correction

You can't use it as a DAC between the pre and the amp. If you want to use it as a DAC, you either do so upstream of the pre (as an input into the pre) or you hook it up directly to the amps, and then you are using it as a DAC+PRE.

Are you talking about a digital out from the pre? If so, you are correct. Like for home theater???

Correct about the bypass (second statement)

BTW - has anyone found any good information about using a better 12v power supply with this unit? I'd like to find a reasonably priced source... Thanks.

Yes, you have the greatest flexibility from my POV by using the tapeloop. Allows as many analog inputs as your preamp has to be run through the Dual Core (which only has 1 set of analog inputs), and it allows you to use the Dual Core as a DAC.

Peter_s or anyone else, would there any reasons that the tape loop might somehow not be ideal? Really does seem the best of all worlds from a versatility standpoint.

Upstream from the pre but not in the tape loop, means only one analog input to the Dual Core.

Between pre and amp, you do not get the DAC functionality (unless you decided to use the volume control on the Dual Core as the volume control for your digital inputs, which seems to be a hassle and would bypass potential benefits of your preamp for your digital sources).

I am also curious to hear people's thoughts on potential power supply upgrades.

I see what you are saying. Yes, if you want to use the volume control of the preamp and its output stage into the amp, insert the unit in the tape loop.