Today we’re going to find out if the Douk U2 USB to Toslink optical and coaxial converter knows how to Linux. This was a bit of an adventure since the first unit never reliably powered on and the second was incorrectly assembled.
Audio & Video Questions
If you have questions about setting up and configuring audio/video hardware or software, head over to the community forums on Interfacing Linux.
Jackbox: Testing setup
CPU | AMD Ryzen 7 1700 | ||
RAM | Corsair LPX 16GB | ||
Motherboard | MSI B350 Tomahawk | ||
GPU | Nvidia Quadro 4000 | ||
SSD | Samsung 840 | ||
PSU: | EVGA 600 B1 | ||
Firewire: | Syba SY-PEX30016 | ||
Network: | Intel i350-T4 | ||
OS: | Debian Buster | ||
Kernel: | 5.4.47-rt | ||
Desktop: | XFCE 4.12 |
Alsa setup:
Pulseaudio setup:
Jack setup:
Verdict: I’m unfamiliar with the Douk product line and the Douk U2 has convinced me to keep it that way. Poor build quality and unreliable hardware are not things I look for in audio devices.
Douk U2
![](https://linuxgamecast.com/wp-content/uploads/2020/08/Douk-Audio-U2-USB-Converter-XMOS-XU208-Digital.jpg)
Pros
Sounds decent, if it works.
Supports 192khz
Cons
First unit did not reliably power on.
Second unit was not correctly assembled.
USB micro connector.