ultraRendu cannot serve native DSD512 to Ayre QX-Twenty with USB2 upgrade

[Martin_Webster]

Welcome to the Roon community, @Alex_Kozlenkov.

DSD512 requires a PCM sample rate well in excess 768 kHz, and your kit may not support this.

DSD 512 to PCM Sample rate conversion

DoP512 requires 1411.2kHz PCM, regardless of brand. But the vice vesa is not necessarily true, i.e. support for 1411.2kHz PCM does not imply DoP512 will work. A far more common case is when a DAC advertizes DSD256 with PCM 384kHz. Since DoP256 requires PCM 705.6kHz, it implies that the DAC cannot cannot support DoP256, and DSD256 has to rely on native DSD, which necessitates Windows with correct drivers or support by Linux native DSD.