Connection to Lumin cuts

Hi there

am giving a try to AS so far is really good in comparison with Roon but connection is Intermitent when connected to Lumin DAC through my local network (ethernet)

I have two systems:


Macbookpro dedicated to AS
Dragonfly black, this connect to Analog in the Amp through USB to RCA
No issues when I use this system

Second system
Lumin + Amp all through Ethernet

Besides, NAS with my music through Ethernet
The server manages music with Minimserver

Macbook is connected throught Ehernet and USB for Dragonfly

When I am in the main room playing through Lumin music cut several times. I use AS remote in my Ipad to play.
To play Lumin DAC I select this device in AS settings, works because I see the name of the song on Lumin display and transmision rate.

So my First question is what is causing the music to cut several times
is my connection? Macbook to Lumin,
If so, could be a problem in my network, however Lumin I play music with Lumin/NAS or Qobuz using Lumin APP, there is no issue.

The other question is about the format, I see in Lumin display that the format transmited is WAV, is that correct ? This format is either with Qobuz or Local music. When I use Lumin the format is FLAC. Most of my music is FLAC and I see that Qobuz uses the same (not sure if this happens with all the Qobuz library)

I will post the debug below

Appreciate help to understand is this is the best way to connect and if my connection is causing the problem

Debug info

Audirvana Studio 1.8.5 (10805)

macOS 12.0.1 with 16GB physical RAM

Connected account:


Polarity Inversion:
	Globally: OFF
	Per track: ON
Effects plugins NOT ACTIVE

r8brain not in use
r8brain filter parameters
Bandwidth = 99.5%
Stop band attenuation 218dB
Phase linear

Max allowed volume: 100
Replay Gain: None
SW volume control: OFF

Sync list: 1 folders
AUTO: /Volumes/Orion/Music/Libreria Digital
iTunes/Music library synchronization: last synchronized on Tue Nov 23 10:59:42 2021

Library database path: /Users//Library/Application Support/Audirvana/AudirvanaDatabase.sqlite

Remote Control server:
Listening on on port 57451

Qobuz: Connected as Qobuz Studio

=================== AUDIO DEVICE ========================

Preferred device: LUMIN Audio:LUMIN Model UID:Pixel Magic Systems Ltd. LUMIN Audio:LUMIN UID:uuid:4c494e4e-3d9b-11e1-b86c-0016e80c2dae

Currently playing to UPnP device at 24 bits 44.1kHz
Selected device:
UPnP device at
Manufacturer: Pixel Magic Systems Ltd.
Model Name:
Model UID: Pixel Magic Systems Ltd. LUMIN Audio:LUMIN
UID: uuid:4c494e4e-3d9b-11e1-b86c-0016e80c2dae

6 available sample rates up to 192000Hz
Volume control: No
MQA capability
Auto-detect MQA devices: Yes
Not a MQA device, user set to not MQA
DSD capability: Raw DSD (MSB)
Device audio channels
Preferred stereo channels L:0 R:1
Channel bitmap: Ox3, layout:
Channel 0 mapped to 0
Channel 1 mapped to 1
Avoid RAW PCM streams: No
UPnP/DLNA supported protocols:
DLNA 1.5: Yes
Gapless playback: Yes
Missing events workaround: No
Can play native DSD: Yes
Volume Control: dB
Number of channels: 2
Use as stereo device only: No

1 output streams:
Number of active channels: 2, in 1 stream(s)
Channel #0 :Stream 0 channel 0
Channel #1 :Stream 0 channel 1

Stream ID 0x0 0 channels starting at 0
14 virtual formats:
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 44.1kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 44.1kHz finite length
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 88.2kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 88.2kHz finite length
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 176.4kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 176.4kHz finite length
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 48kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 48kHz finite length
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 96kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 96kHz finite length
2 ch Non-mixable linear PCM Interleaved 16 little endian Signed Integer 192kHz finite length
2 ch Non-mixable linear PCM Interleaved 24 little endian Signed Integer 192kHz finite length
2 ch Non-mixable linear PCM Interleaved 8 little endian Signed Integer 2822.4kHz finite length
2 ch Non-mixable linear PCM Interleaved 8 little endian Signed Integer 5644.8kHz finite length

0 physical formats

Current device transportInfo:
CurrentTransportState: PLAYING
CurrentTransportStatus: OK
CurrentSpeed: 1
Current device MediaInfo:
NrTracks: 30
MediaDuration: 00:03:35

dc:titleWhat Do You Do for Money Honey</dc:title>
upnp:genreHeavy Rock</upnp:genre>
upnp:albumBack in Black</upnp:album>

nextURIMetadata: <DIDL-Lite xmlns:dc="" xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/" xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/">
Given the Dog a Bone AC/DC AC/DC Heavy Rock Back in Black 4 object.item.audioItem.musicTrack
PlayMedium: NONE

Current device AVT service description:

<?xml version="1.0"?> 1 0 GetCurrentTransportActions InstanceID in A_ARG_TYPE_InstanceID Actions out CurrentTransportActions GetDeviceCapabilities InstanceID in A_ARG_TYPE_InstanceID PlayMedia out PossiblePlaybackStorageMedia RecMedia out PossibleRecordStorageMedia RecQualityModes out PossibleRecordQualityModes GetMediaInfo InstanceID in A_ARG_TYPE_InstanceID NrTracks out NumberOfTracks MediaDuration out CurrentMediaDuration CurrentURI out AVTransportURI CurrentURIMetaData out AVTransportURIMetaData NextURI out NextAVTransportURI NextURIMetaData out NextAVTransportURIMetaData PlayMedium out PlaybackStorageMedium RecordMedium out RecordStorageMedium WriteStatus out RecordMediumWriteStatus GetPositionInfo InstanceID in A_ARG_TYPE_InstanceID Track out CurrentTrack TrackDuration out CurrentTrackDuration TrackMetaData out CurrentTrackMetaData TrackURI out CurrentTrackURI RelTime out RelativeTimePosition AbsTime out AbsoluteTimePosition RelCount out RelativeCounterPosition AbsCount out AbsoluteCounterPosition GetTransportInfo InstanceID in A_ARG_TYPE_InstanceID CurrentTransportState out TransportState CurrentTransportStatus out TransportStatus CurrentSpeed out TransportPlaySpeed GetTransportSettings InstanceID in A_ARG_TYPE_InstanceID PlayMode out CurrentPlayMode RecQualityMode out CurrentRecordQualityMode Next InstanceID in A_ARG_TYPE_InstanceID Pause InstanceID in A_ARG_TYPE_InstanceID Play InstanceID in A_ARG_TYPE_InstanceID Speed in TransportPlaySpeed Previous InstanceID in A_ARG_TYPE_InstanceID Seek InstanceID in A_ARG_TYPE_InstanceID Unit in A_ARG_TYPE_SeekMode Target in A_ARG_TYPE_SeekTarget SetAVTransportURI InstanceID in A_ARG_TYPE_InstanceID CurrentURI in AVTransportURI CurrentURIMetaData in AVTransportURIMetaData SetNextAVTransportURI InstanceID in A_ARG_TYPE_InstanceID NextURI in NextAVTransportURI NextURIMetaData in NextAVTransportURIMetaData SetPlayMode InstanceID in A_ARG_TYPE_InstanceID NewPlayMode in CurrentPlayMode Stop InstanceID in A_ARG_TYPE_InstanceID CurrentPlayMode string NORMAL NORMAL REPEAT_ONE REPEAT_ALL SHUFFLE SHUFFLE_NOREPEAT RecordStorageMedium string NOT_IMPLEMENTED LastChange string RelativeTimePosition string CurrentTrackURI string CurrentTrackDuration string CurrentRecordQualityMode string NOT_IMPLEMENTED CurrentMediaDuration string AbsoluteCounterPosition i4 RelativeCounterPosition i4 A_ARG_TYPE_InstanceID ui4 AVTransportURI string TransportState string STOPPED PAUSED_PLAYBACK PLAYING TRANSITIONING NO_MEDIA_PRESENT CurrentTrackMetaData string NextAVTransportURI string PossibleRecordQualityModes string NOT_IMPLEMENTED CurrentTrack ui4 0 65535 1 AbsoluteTimePosition string NextAVTransportURIMetaData string PlaybackStorageMedium string NONE UNKNOWN CD-DA HDD NETWORK CurrentTransportActions string RecordMediumWriteStatus string NOT_IMPLEMENTED PossiblePlaybackStorageMedia string NONE UNKNOWN CD-DA HDD NETWORK AVTransportURIMetaData string NumberOfTracks ui4 0 65535 A_ARG_TYPE_SeekMode string REL_TIME TRACK_NR A_ARG_TYPE_SeekTarget string PossibleRecordStorageMedia string NOT_IMPLEMENTED TransportStatus string OK ERROR_OCCURRED TransportPlaySpeed string 1

Current device RootDevice description:

<?xml version="1.0"?> 1 1 urn:schemas-upnp-org:device:MediaRenderer:1 LUMIN Audio:LUMIN Pixel Magic Systems Ltd. LUMIN A1 1.0 uuid:4c494e4e-3d9b-11e1-b86c-0016e80c2dae DMR-1.50 image/png 120 120 24 /images/lumin-120x120.png image/png 48 48 24 /images/lumin-48x48.png urn:schemas-upnp-org:service:AVTransport:1 urn:upnp-org:serviceId:AVTransport /AVTransport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /AVTransport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /AVTransport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:schemas-upnp-org:service:ConnectionManager:1 urn:upnp-org:serviceId:ConnectionManager /ConnectionManager/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /ConnectionManager/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /ConnectionManager/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:schemas-upnp-org:service:RenderingControl:1 urn:upnp-org:serviceId:RenderingControl /RenderingControl/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /RenderingControl/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /RenderingControl/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Product:1 urn:av-openhome-org:serviceId:Product /Product/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Product/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Product/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Playlist:1 urn:av-openhome-org:serviceId:Playlist /Playlist/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Playlist/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Playlist/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Time:1 urn:av-openhome-org:serviceId:Time /Time/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Time/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Time/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Info:1 urn:av-openhome-org:serviceId:Info /Info/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Info/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Info/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Volume:1 urn:av-openhome-org:serviceId:Volume /Volume/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Volume/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Volume/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Transport:1 urn:av-openhome-org:serviceId:Transport /Transport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Transport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Transport/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:magictv-com:service:MagicAudio:1 urn:magictv-com:serviceId:MagicAudio /MagicAudio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /MagicAudio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /MagicAudio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Credentials:1 urn:av-openhome-org:serviceId:Credentials /Credentials/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Credentials/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Credentials/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Radio:1 urn:av-openhome-org:serviceId:Radio /Radio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Radio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Radio/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml urn:av-openhome-org:service:Receiver:1 urn:av-openhome-org:serviceId:Receiver /Receiver/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/scpd.xml /Receiver/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/control.xml /Receiver/4c494e4e-3d9b-11e1-b86c-0016e80c2dae/event.xml

UPnP devices found : 7
Device #0: ID 0x0 Marantz SR5013 UID: uuid:c93b0862-b5b1-1cb9-0080-0005cdfcee32 Location:
Device #1: ID 0x0 LUMIN Audio:LUMIN UID: uuid:4c494e4e-3d9b-11e1-b86c-0016e80c2dae Location:
Device #2: ID 0x0 Marantz SR5013 UID: uuid:de4d613f-dbe0-12ba-0080-0005cdfcee32 Location:
Device #3: ID 0x0 Marantz SR5013 UID: uuid:c8f36d21-3e65-1c91-0080-0005cdfcee32 Location:
Device #4: ID 0x0 Marantz SR5013 UID: uuid:252a3c74-5586-216c-405e-c4366dc0ed18 Location:
Device #5: ID 0x0 Marantz SR5013 UID: uuid:380fabb4-be17-5177-45b2-59628c29cf22 Location:
Device #6: ID 0x0 XBR-55X850D UID: uuid:23456789-1234-1010-8000-104FA81F12DD Location:

CoreAudio audio path, buffer I/O frame size: 0

Max. memory for audio buffers: 13410MB
Exclusive access: Enabled
Integer mode: Enabled

Local devices found : 2
Device #0: ID 0x31 Built-in Output Manufacturer: Apple Inc. Model UID: AppleHDA:54 UID: AppleHDAEngineOutput:1F,3,0,1,1:0 Model Name: Apple Inc. Built-in Output
Device #1: ID 0x3b AudioQuest DragonFly Manufacturer: AudioQuest inc. Model UID: AudioQuest DragonFly:21B4:0081 UID: AppleUSBAudioEngine:AudioQuest inc.:AudioQuest DragonFly:(C) 2013 Wavelength Audio, ltd.:1 Model Name: AudioQuest inc. AudioQuest DragonFly

Please edit out your email and personal info from debug

Couple things to try, Your buffer is way large try around 4gb
Try the Raw/Pcm switch in your dac settings


Decreased the buffer and turn the Raw/PCM switch, I think is working, will try with different records, and Qobuz.

I am curious about the transmision being WAV, is that correct ?

Thanks for the help!

1 Like

Good deal ! Hope that helps
As far as WAV let’s get some of the brains to help with that, @bitracer and @Jacob might weigh in on this

Thanks again !

I see AS is playing FLAC (it says in the player) but Lumin WAVE, the bit rate is right thou.

1 Like

Pic showing Audirvana playing FLAC

Lumin playing WAVE same rate

One of the advantages of Audirvana is that all formats are converted to a raw PCM (wav) or DSD. The streamer never has to decode. The work is performed by the PC.

The disadvantage of this is that the network is loaded more heavily. Depending on the network format, a flac file must be loaded over the network to the PC and the decoded file must also be streamed over the same network.

In the settings you can see the workflow of Audirvana.


Thanks, so network capability could become a bottleneck.
that sounds right however Lumin is also doing the same when playing from the server and has a dedicated router slot, never had a problem of music cutting.

Since buffer was reduced have less cuts but still the problem is there.

Everything is relative. A CD quality stream is 1.4 Mb per second. The file from your screenshot is 9.2 Mb per second. A bit old-fashioned network is 100 Mbps. A more recent Network is 1000 Mbps. So normally no problem. With a slower/unstable WiFi network, it may just cause you stream to be unstable.


In my case is all wired and Network is 2017 year I bought router and switches.
Appreciate the help.

Did you toggle the raw pcm switch ?

Yes @OffRode here the screenshot

1 Like

When you play the music on the Mac’s speakers, are there no interruptions?

In the progress bar you can see how far the track has loaded and where it is playing. Looking at the Debug info I don’t expect any problems, but does the track load faster than the playback speed? Is purple not catching up with the light gray bar?

Macbook pro ouputs through USB + Dragonfly DAC, then analog input in Amp. No issues.

Regarding the bar, fills before plays a song, I guess is showing buffering and looks good.

1 Like

More to look for a cause than a solution. If you play lower resolution files. Does it play without interuptions?

Have you tried restarting everything? PC, router, streamer. And then make sure to completely disconnect the power for 10 minutes.

Did not try lower resolution but I’ve tried playing from Qobuz or my NAS and the result is the same, cutting.

Yes I restarted everything and same result, tonight will shut down Macbook to see tomorrow. Today I just restarted macbook.

The trouble with this kind of problem is that it can have many causes.

What I always try is to exclude as much as possible. Simplify the system as much as possible. As few other applications and devices as possible open on the same network. No firewalls or other apps. Disconnect the main cables for 10 minutes from the router and streamer.

And then see if it’s okay. If there are still problems then you know that it is not because of the peripheral matters.

Sometimes it’s something really silly.
Sometimes it’s really a bug in Audirvana.

Maybe I missed it, but did you check if you’re running the latest Lumin firmware?

1 Like

I will keep trying, also planning to change the ethernet switch that Macbook is connected, these are affordable but sometimes start to behave wrong will see the results