MQA on Hegel H390

Answered

Jonas Linde

• November 20, 2020 13:22

My Hegel manual says that H390 can decode MQA on all inputs.

 

I have a H390 and a Bluesound Node 2i.

I have connected the Node via toslink to Optical 1 input.

But I cannot get the H390 to show the MQA logo.

 

If I put the Node in EXTERNAL MQA DECODER, the Hegel shows "44.1 kHz".

If I put the Node in NO EXTERNAL MQA DECODER, the Hegel shows "OFS something".

 

What is "OFS"? How can I make the Hegel play MQA from the Node?

 

Jonas

0

• Official comment

  

  Sam R.

  • November 20, 2020 16:38

  Hello Jonas, 

  Please replicate both cases, then forward a diagnostics log to our support crew via the BluOS app under Help > Send Support Request (log will be automatically attached) so they may look into this further. 

  In the meantime, I would also recommend reaching out to Hegel support to confirm what this OFS message infers.

  Regards,
  Sam R.
• 

  Bjørn Ulvik

  Hi-Res

  • November 20, 2020 17:57

  “OFS” confirms that the product is receiving a decoded MQA stream or file
  
  

  0
• 

  Hernán Dutschmann

  • December 02, 2020 13:06
  • Edited

  Hi Jonas, Bjorn is correct, however to resolve the issue you must disable in BluOS the "Audio Clock Trim" setting. Keep "MQA external DAC" enabled, then restart the track. Probably best to use the Hegel clock in any case :)

  When it shows OFS instead, this behaviour is mandated by MQA, a DSP processed stream is called “MQB” by MQA LTD and the display must show OFS instead of MQA, which sounds like a licensing/provenance matter.

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