Originally Posted by HeadphoneAddict
This is what I'm saying, the sound scales up better with a better amp.
I understand, but you may have missed my point. The MicroDAC's sound didn't really "scale up" in your case as it was always putting out a high quality signal. You just needed an amp of equivalent or better quality to hear it. Therefore, your observation isn't what's "interesting" about the MicroDAC, but actually what's interesting about the MicroAmp (in respect to it's shortcomings).
It's like saying your source scaled up when you tried better headphones....a bit of a misnomer.