Hello.
As I know, Volumio does not support MQA decoding yet since it is not mentioned in the MQA homepage.
However if I use MQA certified external DAC(like usb connected DAC) I think it should be supported.
I am using Dragonfiy red which supports MQA. But when I play MQA files its color does not change into purple which represents MQA file is played.
My friend has tested MQA file with external DAC which is connected through coaxial cable port. Although volumio screen showed with 24 bit 44.1 kHz external DAC moniter shows 24 bit 352 kHz.
I wonder why it is different and if the reason is due to the connection method between USB and coaxial.
Thanks for reading.
Warner