One thing I don't understand though about DACs.
If now I plug my headphones into my headphones out on my PC that means my sound card is doing the DAC. Now ... if I plug Shiit Modi to my PC sound card ... does that mean that now Modi DAC is doing the converting>?>? and then the Vali amp is amping it up?
Hi, this is not how it works. Once you connct the Modi via USB (!!!) to your PC, the Modi is your "soundcard". The other soundcard in your PC won't do anything. And that is a very good thing usually. The modi is a DAC, an digital to analogue converter who converts your flac, mp3, aac wav, whatever digital files into analogue sound that is fed via rca cable to the Vali who then amplifies the signal into your headphones...
PC -> Modi -> Vali -> Headphones