DSD playback issues with RoonBridge

Roon Core Machine

Roon Server - Synology DS720+

Networking Gear & Setup Details

Connected Audio Devices

PI4 i2s Allo Boss2 DAC

Number of Tracks in Library

about 50,000 tracks

Description of Issue

Volumio, moodeaudio, and Ropiee.

When I play DSD using Roon, there is no sound.
It seems that a bug in Roonbridge is causing Dop to convert to 32bit.

Is there anything I can do to fix this?

I’m not sure Roonbridge is doing that, all the format heavy lifting is done on the core AFAIK. You could try the advanced device settings which lets you set upper limits for sample rate and bit depth.

Is that Boss using the PCM5122 DAC? If so, it does not do DSD. See:


boss2 supports DSD64.
It can play dsd64 via UPnP.

Even if the Roon setting is set to 24bit, it transmits DSD in 32bit.

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