Ultrarendu only passes 2 of 5.1 multichannel files

I am using a NuPrime MCX800AD multichannel (8) DAC with the ultrarendu being used as an NAA (HQ Player embedded).

However, I am only hearing 2 of the channels (fronts) on 5.1 channel files – both dsf and pcm.

I was under the impression that the Ultrarendu can pass all of the channels (using sonicorbiter 2.9).

Attached is what the signal path is showing in Roon

What can I do to get all the channels to work?

I use a microRendu running OS 2.9 with an Okto dac8pro. Here are my settings that work for me.

As to the NuPrime specifically, I can’t offer any assistance. If you are still having difficulty, there are several threads on NuPrime products on audiophilestyle.com’s forums that are monitored by NuPrime. That might get you direct help from the manufacturer. JCR