Problem playing DSD 512

Support Nucleus Support
1

Roon Core Machine

Roon Nucleus
WD MyCloud NAS
Standard PC running Windows 10

Networking Gear & Setup Details

Nucleus and all audio gear running into Cisco switch.
Gets there via two Netgear switches. Connected to FiOs

Connected Audio Devices

Optical Rendu Bridge via its own switch / converter to optical, USB to Chord Hugo M Scaler then Hugo TT2

Number of Tracks in Library

Unsure how to check that. About 2TB, mainly DSD. Some 96 and above PCM

Description of Issue

Can’t play DSD 512. Gets through about 30 seconds and then says

“Audio File Loading Slowly, must have a hardware problem.”

I’ve looked elsewhere for help. I did make sure that the Parallelize Sigma-Delta Modulator was enabled. Not sure what else to do.

Thanks!

2

What processing speed is showing when you start to play a DSD 512 file?
It really needs to be above 1.3x preferably above 1.5x to be trouble free.
Click on the signal path to show processing speed.

3

OK, thanks.

It wavers a bit. Looked at it the 1st time, it was running at 1.2x to 1.3x. Now seems stuck at 0.9x

Here’s what the the signal path screen says:

Signal Path: High Quality

Source: DSF DSD 512 2CH [Star Symbol] Lossless

Sample rate conversion (light blue dot: high quality)

Sigma-Delta modulator DSD256 [Star Symbol] Enhanced

Sonore opicalRendu [Star Symbol] Losslese

Output USB Output [Star Symbol] Lossless

So, I guess, priority one would be simply to get the thing to play 512 but also don’t I also need to get to the place where entire the signal path can get to lossless?

Thanks!

John

5

You sure the Mscaler supports that rate I think it’s a max of 256 as it can only output 256 due to the dual spdif. If it’s downsamplng which is killing your machine then it’s unlikely.

6

Ok, now that’s super interesting. There’s no mention of that in the manual (shocker…).

I’ve dropped Chord support a line to hear what they have to say.

I’ll also bypass the m scaler and go straight to my dac. I’m on the road right now but will report back my findings.

Thank you so much for your response.

7

Ok. Bypassed the m scaler and went right into the Hugo Tt dac. Still had same problem. Signal path still says it’s downsampling to 256 even though everything in the path can (allegedly) handle 512. Still waiting to hear from chord.

Thanks again.

8

512 on the TT2 is only supported on Windows i believe with the supplied driver so won’t work with your endpoint which is Linux based.

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9

OK, there you go. I imagine that’s the root cause of all my problems. For giggles, I’ll download the driver on my pc and see if I can run 512 through the m scaler dac combo. Will have to give that a whirl tomorrow.

Many thanks,

J

10

You can’t Mscaler only supports up to 256 as you can’t yet higher out the other end via its dual output each one has a max of 384/24 so max 768/24 which only allows for DSD256 via DoP to handle 512 it would need to support much higher pcm rate to accommodate it via DoP. DSD really isn’t what the Mscaler is about. The DAC can support it using the windows ASIO driver but that woujd be via USB input and not via the dual bnc from the Mscaler.

11

Gotcha. Will play around with DAC. Gotta say, pretty disingenuous of them; they say it works with Linux. Spose the mean Linux on a Pc.

Thanks again.

12

It does work with Linux on the DAC up to 256 and 512 on windows if you use USB Input as that’s the only one that can support that rate unless you have uber PCM rates for DoP. Nothing disingenuous about it. They don’t mention DSD at all for the Mscaler. Mscaler is really designed around upscaling PCM. If you want to play native DSD you chose the wrong combo really.

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