I’m thinking of buying a Motu 8a to use with Roon and the Convolver (Audiolense filters). My question is will Roon work with the Motu 8a and say the @allo.com USBridge without issue? Of course I’d have to be able to use Roon volume control as well as the 8a would go direct to all channels.
Anyone from Roon?
Can anyone help?
I have the unit and while the @allo.com USBridge see’s the Motu 8A, and Roon will set it up I don’t get any audio output and the the track time seems to jump too. I have confirmed the unit works when directly attached to my MacBook Air via USB and using JRiver.
can you provide ssh login and provide below comands results.
lsusb
lsusb -t
cat /proc/asound/card1/stream0
Hello @jtwrace,
I am unable to find any reference in the MOTU 8A documentation regarding Linux support. I would check with MOTU about the device’s Linux support before continuing further troubleshooting.
-John
It is Linux compatible is what they say when I called them. I also do have a Motu tech guy’s email that said he would help as much as he can if there are specific questions that would help you or Allo
root@DietPi:~# lsusb
Bus 004 Device 003: ID 07fd:0005 Mark of the Unicorn
Bus 004 Device 002: ID 0424:2412 Standard Microsystems Corp.
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@DietPi:~# lsusb-t
-bash: lsusb-t: command not found
root@DietPi:~# lsusb
Bus 004 Device 003: ID 07fd:0005 Mark of the Unicorn
Bus 004 Device 002: ID 0424:2412 Standard Microsystems Corp.
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@DietPi:~# lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=aotg_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/2p, 480M
|__ Port 1: Dev 3, If 0, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 1: Dev 3, If 1, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 1: Dev 3, If 2, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 1: Dev 3, If 3, Class=Vendor Specific Class, Driver=, 480M
|__ Port 1: Dev 3, If 4, Class=Vendor Specific Class, Driver=, 480M
|__ Port 1: Dev 3, If 5, Class=Vendor Specific Class, Driver=, 480M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=aotg_hcd/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-hcd/1p, 480M
root@DietPi:~# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: atm7059link [atm7059_link], device 0: ATC2603C PCM atc2603c-dai-0 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: atm7059link [atm7059_link], device 1: HDMI PCM atm7059-hdmi-dai-1 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: atm7059link [atm7059_link], device 2: SPDIF PCM atm7059-spdif-dai-2 []
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: D8A [8A], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
root@DietPi:~# cat /proc/asound/card1/stream0
MOTU 8A at usb-aotg_hcd.1-1.1, high speed : USB Audio
Playback:
Status: Stop
Interface 1
Altset 1
Format: S24_3LE
Channels: 24
Endpoint: 7 OUT (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Capture:
Status: Stop
Interface 2
Altset 1
Format: S24_3LE
Channels: 24
Endpoint: 7 IN (ASYNC)
Rates: 44100, 48000, 88200, 96000, 176400, 192000
Data packet interval: 125 us
Hello @jtwrace,
We’re currently investigating some reports of issues using multichannel USB DACs on Linux. I have included your report in our tracking system. Once the dev team has completed their assessment on what’s going on here, I’ll be sure to update you on their findings.
-John
1 Like
Thank you. Do you know how long that will take? I was able to borrow a friends @sotm.kim sMS-200 and have the same result.
Is there a list of MCH dacs that are known to work?
Hello @jtwrace,
At this time, we do not have any multi-channel USB DACs with known Linux capabilities in our Roon Tested program. We are actively working with a few partners to resolve this, but I can’t promise any timelines at the moment.
-John
Thanks. Would it be possible to update this thread when you have an update? It’s really too bad there is no roadmap. 
Hi Roon, any news on this? I am thinking about the same. Thanks!
Hello @Mark_Specht,
I do not have any new information to share at this time. I can assure you that this is still on our roadmap and that we will be sure to keep this thread updated when we have more concrete estimates on timelines.
-John
1 Like
@Mark_Specht More information on this topic ? Is it supported now ? I’m thinking of buying a Motu 8a or 624.
Anyone have an update whether the Motu 8a or others will work with Roon using an RPi4 running RoPieeeXL?
Hi @john
Is there any progress in the last 2 1/2 years on this yet? I’m looking at a Motu UltraLite AVB which I’d like to use with my SOtM sms200. I want to stream stereo processed by convolution/crossover into six channels. Are these going to work together for playback from Roon?
Thanks