Perhaps this can help.
Mike B. at Audioshark did that comparo, as he had Jerry's loaner BADA ref and Jerry's B7. Mike then bought his own GG and is on record as saying this on May 19:
"I know audio memory is very fickle, but I would venture a guess that with this tube combo and the Aurender N100H providing the sweet music, the Lampi PCM now is on par with the best I've heard....and you already know about the DSD....it sounds like nothing else digital, period."
The bold quote, that's what Robert Harley says in his review of the BADA Reference DAC too, and which other users of that DAC have reported as well. I'd like to hear the comparison for myself, I am not going to take anyone's word for it.
I do have to say that I was very impressed with the Lampi B7 with on-the-fly conversion PCM > DSD. Yet now that I have heard what improved room acoustics can do on my humble standard BADA Alpha 2 ... Not saying that it's comparable (different system and so on), but darn, it's freakin' good.