Hello.

You know the AVB serie from MOTU.
We've talked about the 1248 & the UTRALITE AVB previously on the
Linux Audio Users list :

http://lists.linuxaudio.org/pipermail/linux-audio-user/2017-May/108050.html
http://lists.linuxaudio.org/pipermail/linux-audio-user/2017-March/107629.html

Now the MOTU 624 AVB.
Working with Gnu/Linux Debian 8.7.
The same as 1248 & ULTRALITE AVB, «real» class compliant,  and web app
to control all the settings of the card from your browser.

Update firmware with 0 trouble through the web app interface :

http://achromatopsie.fr/list/00_installfirm.jpg

http://achromatopsie.fr/list/01_verifyingfirm.jpg

http://achromatopsie.fr/list/02_rebootfirm.jpg

http://achromatopsie.fr/list/03_successfirm.jpg

Some screen shot from the Routing menu (sorry need to zoom out, too
much inputs ! AVB disabled so no stream appears on the screen)

http://achromatopsie.fr/list/04_routing.jpg

Screen shot from the Mixing menu :

http://achromatopsie.fr/list/05_mixing.jpg

http://achromatopsie.fr/list/06_mixingzoom.jpg

http://achromatopsie.fr/list/07_mixingzoom1.jpg

And from the Device menu :

http://achromatopsie.fr/list/08_device.jpg

http://achromatopsie.fr/list/09_device2.jpg

Pluged with USB3, Gnu/Linux Debian 8.7 - Custom Kernel :
Linux 4.9.3-amd-64-20170113 #1 SMP PREEMPT Sat Apr 8
17:30:25 CEST 2017 x86_64 GNU/Linux

lsusb

Bus 003 Device 002: ID 07fd:0005 Mark of the Unicorn

lsusb -t

/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Audio, Driver=snd-usb-audio, 5000M
    |__ Port 1: Dev 2, If 1, Class=Audio, Driver=snd-usb-audio, 5000M
    |__ Port 1: Dev 2, If 2, Class=Audio, Driver=snd-usb-audio, 5000M
    |__ Port 1: Dev 2, If 3, Class=Vendor Specific Class, Driver=, 5000M
    |__ Port 1: Dev 2, If 4, Class=Vendor Specific Class, Driver=, 5000M
    |__ Port 1: Dev 2, If 5, Class=Vendor Specific Class, Driver=, 5000M

aplay -l
**** Liste des Périphériques Matériels PLAYBACK ****
carte 0: D624 [624], périphérique 0: USB Audio [USB Audio]
  Sous-périphériques: 0/1
  Sous-périphérique #0: subdevice #0

Made some quick record (guitar from emulated output of an amp,
microphone vocal) nothing to say, work perfectly. Nice preamp - for me
- clean, no hiss, no background noise, nice dynamic, can hear all my
  bad notes and bad fingers on the guitar :)
The line input - jack - work also perfectly, respect the color of my
preamp (Warm Audio)

Did not try the optical I/O as i do not have any devices for it.

Thanks UC2, thanks MOTU.

Anyone have access to the Alsa project card's list and update ?
https://www.alsa-project.org/main/index.php/Matrix:Vendor-Mark_Of_The_Unicorn

All the best !




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