Probably me you are referring to. I have had it for ten days and I can now say that I think the Master-6 drives the HE-6 with ease, finesse and power. I would add holographic imaging and stellar transparency. To me this is definitely high end performance.
At first it had increased bass and treble, but now it has found itself - relaxing the extremes of the audio spectrum.
After discovering this, I remembered that someone here on Head-Fi saying the same thing about how Audio-gd's products change with burn in the first days.
I have a LC Audio Sidewinder pre amp and LC Audio ZAPsolute Mk 4 power amp set to compare it to.
When attaching the HE-6 to the LC Audio power amp and using the Master-6 as pre amp the difference is subtle, but in favor of the Audio-gd.
Master-6 hp out delivers more transparency and better imaging precision than Master-6 pre out to ZAPsolute (HE-6 attached to speaker tabs).
The Master-6 as a pre amp is clearly better than the LC Audio Sidewinder pre amp.
This is obvious when using hp out of the Master-6 versus the LC Audio amp combo (speaker tabs out), because then the difference more clearly there.
Edited by LarsHP - 12/30/11 at 10:27am