This thread is dedicated to opinions, questions and experiences around the Douk Audio U2 Pro digital to digital converter (DDC)andre-clocker, to convert USB digital audio signal into SPDIF RCA coaxial, toslink and hdmi I2S. It is based on the well known Xmos X208 chip for USB input.
It has its own clocks, 3 of them, and with three different options of clocks when you order your unit. It has input for external power supply. It is like a cheap SIngxer SU, or a Denafrips ares, or a Singxer F1, but affordable.
Photos:
![Hd6c07549174248a8bf28c996334a7af6g.jpg Hd6c07549174248a8bf28c996334a7af6g.jpg](https://cdn.head-fi.org/a/11525375_thumb.jpg)
![96ddb09f538e0cdad595ab17fac326ef.jpeg 96ddb09f538e0cdad595ab17fac326ef.jpeg](https://cdn.head-fi.org/a/11525377_thumb.jpeg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525378_thumb.jpg)
![H20849f5bf63b4a4b9c2fddb5b46787efR.jpg H20849f5bf63b4a4b9c2fddb5b46787efR.jpg](https://cdn.head-fi.org/a/11525379_thumb.jpg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525387_thumb.jpg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525388_thumb.jpg)
There is also an even smaller version, with no option for external power supply, and no internal clocks:
![718iIiadMGL._AC_SL1200_.jpg 718iIiadMGL._AC_SL1200_.jpg](https://cdn.head-fi.org/a/11525381_thumb.jpg)
![s-l1600.jpg s-l1600.jpg](https://cdn.head-fi.org/a/11525382_thumb.jpg)
![0dddc6b09b.jpg.500x500.jpg 0dddc6b09b.jpg.500x500.jpg](https://cdn.head-fi.org/a/11525383_thumb.jpg)
![714vR9AJPrL._AC_SL1200_.jpg 714vR9AJPrL._AC_SL1200_.jpg](https://cdn.head-fi.org/a/11525389_thumb.jpg)
Aliexpress links:
U2
U2 Mini
eBay links for better clock versions
To be continued...
It has its own clocks, 3 of them, and with three different options of clocks when you order your unit. It has input for external power supply. It is like a cheap SIngxer SU, or a Denafrips ares, or a Singxer F1, but affordable.
Photos:
![Hd6c07549174248a8bf28c996334a7af6g.jpg Hd6c07549174248a8bf28c996334a7af6g.jpg](https://cdn.head-fi.org/a/11525375_thumb.jpg)
![96ddb09f538e0cdad595ab17fac326ef.jpeg 96ddb09f538e0cdad595ab17fac326ef.jpeg](https://cdn.head-fi.org/a/11525377_thumb.jpeg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525378_thumb.jpg)
![H20849f5bf63b4a4b9c2fddb5b46787efR.jpg H20849f5bf63b4a4b9c2fddb5b46787efR.jpg](https://cdn.head-fi.org/a/11525379_thumb.jpg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525387_thumb.jpg)
![Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg Douk-Audio-XMOS-XU208-USB-to-Coaxial-Optical-12S-Converter-Digital-Interface-Audio-Adapter-DSD...jpg](https://cdn.head-fi.org/a/11525388_thumb.jpg)
There is also an even smaller version, with no option for external power supply, and no internal clocks:
![718iIiadMGL._AC_SL1200_.jpg 718iIiadMGL._AC_SL1200_.jpg](https://cdn.head-fi.org/a/11525381_thumb.jpg)
![s-l1600.jpg s-l1600.jpg](https://cdn.head-fi.org/a/11525382_thumb.jpg)
![0dddc6b09b.jpg.500x500.jpg 0dddc6b09b.jpg.500x500.jpg](https://cdn.head-fi.org/a/11525383_thumb.jpg)
![714vR9AJPrL._AC_SL1200_.jpg 714vR9AJPrL._AC_SL1200_.jpg](https://cdn.head-fi.org/a/11525389_thumb.jpg)
Aliexpress links:
U2
U2 Mini
eBay links for better clock versions
To be continued...
Last edited: