HoloAudio May Dac, New King of dacs? Stereophiles review on it?

I have always preferred attenuation through a robust system (Aesthetix Callisto eclipse)

You need to do some homework, most "good solid state dac's" have output stages that will be more "robust: and will have more current drive than most any tube preamp, and many solid state preamps also.

Cheers George

It was faulty or something, I had the "Spring L2" lent to me for 2 very enjoyable weeks, it’s a great dac especially in NOS mode, and this new "May" dac is said to be a magnitude better again, and the bench test measurements back it up.

Cheers George

How about the Metrum Adagio or the new Sonnet Morpheus. Both of those R2R DACs have volume control

I was just stating more that the measured specs were "so good for R2R" on the Holo May Dac as John Alexander found and raved about, that really all it needed to top it would have been a volume control, to make it the complete R2R dac package. I already have the MSB discrete R2R with volume.  

Cheers George