By all accounts the M3 represents a high bar for more budget-minded DACs, and given your tastes the only one that might come close is the R2R Schiit Yggy although Ayre and Chord might also come close. I think the Sonnet Morpheus, as an R2R NOS design, might do some things a little differently that might appeal to you and might better the M3 — and that’s a big maybe — but that DAC is as pricey as the M3 so it’s not saving you any $$$, which was a major point in this whole thing in the first place.
My only other thought would be to try a Synchro Mesh W4S Reclocker in front of the D90 to see if that might take the edge off that DAC enough to make it more comparable to the M3. Anyhoo, hope this helps, and best of luck in your quest. I’d certainly be interested in what you find as my tastes in sound are fairly similar to yours.
My only other thought would be to try a Synchro Mesh W4S Reclocker in front of the D90 to see if that might take the edge off that DAC enough to make it more comparable to the M3. Anyhoo, hope this helps, and best of luck in your quest. I’d certainly be interested in what you find as my tastes in sound are fairly similar to yours.