DSD Sample rate limited to 128

[ezwheelz]

Roon Core Machine

Intel NUC10i7 ROCK running Roon 2.0

Networking Gear & Setup Details

Cat6 Ethernet from router to Lumin U2 Mini

Connected Audio Devices

Lumin U2 Mini connected via USB to Holo Audio May KTE DAC

Number of Tracks in Library

18000

Description of Issue

I am trying to understand why I only see DSD128 as my max sample rate. Any advice on why this is happening and settings I can change to get DSD 256 and DSD512 as options as well.

[ezwheelz]

I think I found the reason… the Lumin iPhone app allows volume control from within the Roon interface. This is really convenient but if it is enabled the DSD sample rate is capped at 128 for some reason. If I disable this volume control in the Lumin app I can select all of the DSD settings.

I will have to do some test to see if setting DSD to 256 or 512 is worth the loss of this volume slider that is accessible within the Roon app and not have to use a separate remote for volume.

[wklie (Peter Lie)]

Lumin U2 mini released

In Lumin product line: Only Lumin product analog output can do DSD with volume control Digital output supports DSD only if volume control is disabled. If you need Lumin volume control for digital output, please use Roon DSP Engine to convert DSD to PCM first.