Nucleus down samples 192k MQA to 96k to Naim MuSo 2 end point

You don’t; you have a 48k 24-bit MQA stream which was encoded from a 192k master. Roon can decode it to “MQA Core” which is 2x the rate streamed from TIDAL. MQA renderers --which the MuSo is not-- can do further decoding and/or up-sampling.

The correct settings for your MuSo in Roon are:

  • Enable MQA core decoder = yes
  • MQA capabilities = No MQA support

With these settings, if you so wish, you may up-sample further using Roon’s DSP engine, but this up-sampling has nothing to do with MQA (and would in fact break the MQA stream for rendering endpoints).

Let me link to this again: