DSD256 is not accepted but downsized to DSD128

[Bernhard_Holzmann]

Core Machine (Operating system/System info/Roon build number)

Roon Nucleus with built-in 1TB SSD, on which music database is stored.

Network Details (Including networking gear model/manufacturer and if on WiFi/Ethernet)

Ethernet

Audio Devices (Specify what device you’re using and its connection type - USB/HDMI/etc.)

Macintosh MA9000 connect via USB with Roon Nucleus

Description Of Issue

I have several albums in DSD256. However, Roon down-sizes the files to DSD128, although the MA9000 accepts DSD256. The down-sizing works well, but I expect higher sound quality with DSD256. I cannot find any option in the system preferences to play native DSD256. Attached you will find 2 screen shots detailing my settings.

[ged_hickman1]

Not sure but it might not do 256 on the Linux in the nucleus. 256 might only be available on Mac, windows.
The manual only mentions Mac and Windows.

[ged_hickman1]

https://community.auralic.com/t/dsd256-output-to-external-dac-via-usb-altair/1662/6

[anon90297517]

You have DoP selected for DSD replay.
To my knowledge DoP only supports upto DSD128
Dirk

[ged_hickman1]

You can get 256 but the dac has to be capable of 768 pcm.
Here’s another thread with Macintosh DSD information

DSD256 format is unable be played on Roon via McIntosh C2600 [Answered]

The only way to get DSD256 to a capable McIntosh DAC is via a Windows computer and the McIntosh provided Windows ASIO driver. But be warned when using Native DSD mode with the McIntosh windows driver you will get pops on start and stop of playback with Roon and HQPlayer. McIntosh is aware of the issue and choses to do nothing about it as Native mode is only really specifically needed for DSD 256. DOP will work fine up to DSD128 as you have discovered. I was told via emails from McIntosh that…

[Bernhard_Holzmann]

Thanks a lot for all the comments and advices. Overall, it seems that I will have to continue with DSD128.