Very good sound card with good sound.
I had another USB sound card and the quality wasn't great, the USB-C plug didn't fit completely into the box and I quickly had crackling on the central voice and subwoofer output, I thought it was a problem with my 5.1 system, but in fact, when I installed this new sound card, it's no longer the same, the USB plug is type B which fits well in the bottom and doesn't risk to come out. I have only one regret, it's that the female JACK plugs are not coloured so not easy. I made a little table :
left plug / green jack --> front speaker.
Right jack / black jack --> rear speaker.
Centre socket / orange jack --> centre, subwoofer.
As for the quality of the sound, it is only happiness. I didn't use the volume control wheel, I just had to tell my sound system manager that I didn't want stereo output, but 5.1.
I'm on GNU/Linux with Manjaro and I didn't need to install anything.
So it's all good except for the JACK outputs which are not coloured.
The package arrived on time and in good condition.
The box that was in the package is nice, you can tell they made an effort.
Thank you.