DSP Plugin (Brutefir3) - MQA and DSD support?

Good evening!

Currently I’m using Volumio on a Raspberry Pi3 with a Pro-ject Pre Box S2 Digital DAC. Playback of Tidal MQA music and local DSD files works flawlessly. I like to try Digital Room Correction capabilities of the DSP Plugin (Brutefir3).

Is it possible to use Volumio with DSP plugin and MQA or DSD music files?

I never tried, but I’m pretty sure no MQA will output as MQA… and DSD will be converted to PCM

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If my Volumio plays MQA music my DAC also shows, that it is playing MQA music:

Is there a loss of quality, if Volumio converts a DSD256 file to pcm?