Hey Mattheus,
Based on my experience with both, used to own your digital front end, I like the AA much better then the DCS. I find the DCS gear to be somewhat "cool/analytical" sounding to me were the AA's being tube based gives you the right timbres/image density without being rolled off or euphonic. I believe my present DAC, Concert Fidelity DAC-040, is even better then the AA Tube reference in all areas, that's way I purchased it for my system. This is all based on redbook not high-rez formats.