The story behind this comparison was started several months ago when I bought the Fiio X7 Mark-2 for my own. That purchased was initially to use the Fiio X7 as digital transport only. I will using the SPDIF output and connect it to my DAC.
Then, I become curious because the DAC inside the Fiio X7 is a modern delta sigma DAC and I aware that the Fiio X7 model is the highest grade of the Fiio digital player line up.
With the analog line out from the Fiio X7 directly connect to my amplifier, then I make a comparison with the same whole audio setup but only changing the DAC to the vintage multibit DAC I had.
It doesn't take so much time to conclude that the vintage multibit DAC sound better, more musical, textured and wonderful. While on the modern delta sigma DAC like in the Fiio X7 is not sound bad at all, but it is more likely a digital sound compare to the musical multibit DAC sound.
You can read again the post about that comparison here
My curiosity getting bigger since then, especially the sound for the modern multibit DAC.
So in this post I will share my experience when listening to the Schiit Bifrost 2 multibit DAC and compare it to the vintage multibit DAC.