I like both of these DACs, but the Bifrost 2 has more character and natural attributes with it. I had the RME + THX setup for a while with various THX amps, and they were mostly used for reviewing, but I didn’t enjoy the setup as much as using it with (insert any amp here).
My ideal listening setup is to have something that I know measures well, and then something that is colored to my liking. The Bifrost 2 seems to fit both molds in a single unit. I am actually quite happy with it’s paring with the Asgard 3 too. Maybe they came out at the same time for a reason. They seem to go really well together, and surprisingly sound really nice with my ZMF Verite, which I thought only sounded well with higher impedance amps – I think some of the softer features of the Asgard 3 (which I mentioned in my impressions) really gives it some of the feeling of a tube-like setup without actually being one.
Going off on a tangent now, I am thinking of picking up a Saga+ now.