Does the native DSD patch need to be applied to the OS running Roonserver, or Roonbridge? In the past patching the OS running Roonbridge with the native DSD patch enabled native DSD support no matter if the OS running Roonserver was or not.
For example, say someone has a Microrendu that was patched for native DSD with a specific DAC. However ROCK wasn’t. Would the patch on the Microrendu end allow native DSD support?
Many DAC’s don’t support native DSD with Linux without a special patch to the OS. ROCK for example, being Linux based, can’t do native DSD with a number of DAC’s since they haven’t implemented the patches into the OS. Some DAC’s can’t do native DSD at all with Linux as there simply isn’t any patches.
To clarify what “native DSD” means in this application is referring to how the DSD is being sent to the DAC’s USB interface. When sent natively, it stays in pure DSD from the server/streamer to the DAC’s USB interface. The other method is called DoP. What that means is the DSD is encoded into a PCM format for the transmission to the DAC’s USB interface. Then inside the DAC’s USB interface it’s decoded back to pure DSD.
Although this method of DSD transmission is lossless, it requires double the bandwidth to transmit. And what’s often overlooked is the decoding process in the USB interface ramps up the CPU load in the USB interface processor. As a result additional noise is created that adds jitter to the clocking section. So native DSD transmission is always the best way to do it.
The list of DAC’s that currently won’t do native DSD with ROCK, but could with the addition of any of Sonore’s streamer products (if the patch only needs to be applied to the bridge) can be found here:
I have my Linux patched with all of those DAC’s. In the past patching the OS running the bridge used to do the trick. With MSB DAC’s this stopped working. I haven’t tried others on that list. However if I run Roonserver on the exact same OS the native DSD works fine with the MSB.
If Roon wants to implement the patches in ROCK, it’s something they’ll need to do. Daphile for example has their OS patched with all of the DAC’s on the list. A new one pops up and Kimmo from Daphile has it patched within a couple days.
[quote=“MiveraAudio, post:3, topic:29507”]
Many DAC’s don’t support native DSD with Linux without a special patch to the OS.
[/quote]Ah. You did not make any reference to Linux, just to “OS,” in your original post.