I would like to suggest to have some pro dacs tested, here are some candidates:
Cranesong solaris - http://www.cranesong.com/SOLARIS.html
Dangerous convert-2 - https://dangerousmusic.com/product/convert-2/
RME ADI-2 DAC - http://www.rme-audio.de/en/products/adi_2-dac.php
BURL Audio B2 Bomber...