I have a different DAC than you (metrum amethyst) but also use a passive preamp and recently bought a schiit eitr to convert my laptop USB to SPDIF. It really has been a worth while purchase for me. The eitr completely changed the sonic character of my system. Digital sources sound so much more analog and seem to be played effortlessly. I know the metrum DAC's are known for their warmth so I may be hearing more of that.
I wouldn't consider the amethyst an expensive DAC and the eitr has been a great addition to my setup. I'm just using a cheap blue jeans SPDIF cable.
I wouldn't consider the amethyst an expensive DAC and the eitr has been a great addition to my setup. I'm just using a cheap blue jeans SPDIF cable.