Unfortunately, I’m the exception. I prefer Dave alone to BluDave, which I appreciate is heresy.
The addition of Blu II increases detail, depth and soundstage. Unfortunately, in my case it also introduces an unacceptable glare - on both CDs and files via USB - which I’ve not been able to eredacte completely, even though I’ve tried everything I can think of. The most affective solution is to use ferrite clamps, since I suspect the BNC connections are the cause. Even with ten per cable, there is still a trace of glare which manifests itself on piano music where the upper registers take on an artificial, glassy quality. The problem might be with my Dave, which is more susceptible to these things than others, but since I’ve owned it for about 18 months, there’s little I can do about that. I will probably sell my Blu II as I prefer the warmer, more accurate rendition of timbre on the Dave alone, provided the Blu II is not connected.
Incidentally, has it not struck anyone else as odd that it’s recommended that users of the BluDave combo use ferrite clamps to eliminate RFI, which is generated by the signal itself. It strikes me that this may not be the optimum means of transferring the signal between the two units.