DSpeaker Anti Mode Dual Core 2.0 Room Correction

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.

I use a 12v battery ps on mine and found that it sounds much better than the supplied wall wort. I use my Dual Core as a Dac-Preamp. The D/C sounds less "hard" with better sound stage, and imaging. I would highly recommend looking into an upgraded ps for the D/C. My BPS is a custom job and I'm trying to find a reasonably priced 12v linear supply for comparison.

I have a 12v car starter, which is essentially a rechargeable battery with both battery leads and a cigarette lighter output. It can be used for an audio power supply - and recharged between uses. I will try that out. I've been in touch with Toni at DSpeaker, and he told me that users have reported that the Musical Fidelity vPSU mkii ($129) has led to improved sonics. I ordered one from Audio Advisor to try on their 30 day trial. Parts Express sells a 13.8v regulated power supply for something like $40. Toni told me that 13.8 is OK, but not to go any higher.

Thanks for the tip on the Musical Fidelity PSU