No I haven't.
In Skylab's review of the Dark Star he stated that if using different phones than the HE-6 than there are better cheaper amps. This makes me believe that the power output is the reason for its popularity with the HE-6 not it's actually quality. The Master-6 also has the power output & is also superb with the LCD2.2's and T1's even unbalanced so maybe it's the better quality amp. That's just the way I see it. If the DS had a cheaper case but cost the same then I would have more faith that it would perform on an even higher level due to the potentially higher parts cost.
This is just the way I rationalize things, I am always looking for quality & value. The DS may give the former but IMO does not give the later. Now if RSA produced a cheaper version with the same internal design & parts but with a cheaper case and sells it for say $2000 then I may consider that as good value.
This is not in any way a critism of the DS and I have not heard it but I am always dubious when the essential parts of an amp (the parts that contribute to SQ) only make up half the total cost!
I agree totally. That's why if "when I hear it" the B24 speak amp sounds waay better than my B22 and I myself can tell the difference. I will put my HE-6 up for sell. I'm not going to be on a costly journey just to power the HE-6. I have lots of other phones I have to take in consideration.