@Ludwig

The Ultra DAC manual states that "All lower bit-rate signals are upsampled to 352/384 kHz to allow a wider choice of high-quality filters."

Is this inconsistent with the output data rate equivalent to 768 kHz or is this a technical nomenclature issue (or simply my lack of understanding).

Either way, the specs of this new super DAC are pretty amazing. It's a great counter-intuitive move by Meridian. Can't wait to hear it. I wonder if they will offer an upgrade option to owners of existing 818v3s?

Streaming: Roon, NUC, QNAP869 NAS
2ch system: dCS Vivaldi, Audionet Stern, Audionet Heisenberg, Magico Q1
Retro system: 101/104/105, Red Rose Spirit