USB digital output volume setting (variable only, can't be fixed)

Answered

gonzaemon

• July 08, 2024 04:43

Where did the Fixed Volume function on the USB digital output go?　The option to fix the volume still appears on the S/PDIF RCA output.

When the USB output was first implemented, it only had a fixed volume, but when did it change to only variable volume? I wish it was at least selectable.

(BluOS 4.11 & BluOS controller for iOS, version 4.4.0)

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• Official comment

  

  Seppi Evans

  Hi-Res

  • July 08, 2024 09:07

  USB out is always fixed, so something is not right in your setup.

  I would unplug the USB lead, power off the NODE for 10 minutes and power cycle your DAC, now try again. If you have a DDC you may get odd results.
• 

  gonzaemon

  • July 08, 2024 10:51

  Seppi-san,

  I, too, have always believed that the USB output is fixed.　That's why I posted it here.

  Can you take a look at the attached image and check it out?

  

   

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• 

  Seppi Evans

  Hi-Res

  • July 08, 2024 11:10

  That’s a DDC (digital reclocker) rather than a DAC hence “odd results”

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• 

  gonzaemon

  • July 08, 2024 20:44

  I've checked it with two other USB DDCs I have. Something very strange is happening.

   

  This USB DDC can't be fixed Digital Output volume, too. This is the same as the case of the MUTEC MC-3+USB.

   

  (JAVS X-DDC)

  

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• 

  gonzaemon

  • July 08, 2024 20:50

  This USB DDC works as expected.

  What is the difference between them? 

  I would like to add that the MUTEC MC-3 + USB was also working correctly. I haven't been able to figure out which version upgrade caused the mistake.

   

  (UDA DDC)

  

   

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• 

  gonzaemon

  • July 09, 2024 03:42

  
  Seppi-san,

  This strange situation is not caused by the user's setup. Because I can actually adjust the volume with Volume Slider, and if it is according to the specifications of BluOS/Node, this should never happen. 

  It's a guess, but in the process of Node recognizing the USB device, it appears to accidentally turn off 
  the Fixed Volume setting internally.

   Do you have any suggestions?

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• 

  Seppi Evans

  Hi-Res

  • July 09, 2024 05:17

  In the BluOS App please select Settings, Send Support Request, so the Bluesound Support Crew can review the log file and take a closer look.

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• 

  Lorelleandjon

  • July 12, 2024 00:24

  I am having same issue since last update. Node N130 usb digital out to dac in Deqx HP5. Contacted bluos support who recommended reboot, and if that didn't work, then to wait for next update. Annoying in the mean time. Even a slight reduction down from max vol and loose bass weight on system.

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