Oh man, you are going to stress people out and stir big waves with this post. The Empyrean I auditioned sounded more refined and detailed than mine but I think that was because of the Dac and amp. Out of Qutest and Taurus MKII you just can't really get the clarity and refinement of the TT2+MScaler. I can report back in a few days when my TT2 arrives. Driver variations at Meze? I doubt it. I guess we just need to wait for @Meze to comment on this.