@curiousjim , as I think you know, i am a big fan of the Aero DAC, especially with good NOS tubes, especially the TungSol black glass round plates. I have just recently moved on to the Mojo Mystique Z “Q”, but, in line with what @audphile1 said above, that’s a 3x price jump. I think the Aero is a great R2R DAC in (and above) its price bracket.
(I will be selling my <6 month old Aero; if you are interested let me know and I’ll set up a listing page on here and on USAM.)

