I have a Nuprime multichannel (8 channel) DAC. Can the NAA in Ropieee work with 8 channels?
That depends how it presents over USB… but I doubt it.
Basically Roon only supports multichannel in some narrow circumstances over HDMI. The only way you could use this with Ropieee is if it presents as multiple “devices” that you can enable as discreet zones… not as a single multichannel zone.
No, multichannel is surely working also over usb (Okto Dac8 also very fine under Linux and Ropieee; exaSound e68 only under Windows + Mac → both I’m using) with Roon or HQPlayer.
But for nuprime I’ve never seen, that their DACs can used with Linux and so I fear that it will not work with RoPieee.
But you can use a MiniPC with Windows (this is what do for using ASIO driver with my exaSound multichannel dac), ASIO driver and NAA on it.