Review on Douk Audio U2 PRO XMOS XU208 Digital Interface - USB To TOSLINK/Coaxial/Optical/HDMI IIS Adapter For DAC, Preamp & Amplifier | PCM & DSD256 Support by Darin Grosz
Great when it works, after a while volume magically drops down a lot requiring restart of the unit
Wanted to love the unit as it worked perfectly when plugged in for a while. But then I noticed how after a while the volume would stay low when I start using it again after it stayed plugged in. I unplug the toslink cable and put back - same low volume. I unplug 5v DC and put back in - and volume goes back. Scared my toddler the first time I did that as the volume went up 10X :/ Returning this and looking for something more reliable.
- USB interface can be used as signal input and power input at the same time, and with external DC 5V input (with priority) that can be powered by phone charger or power bank, easy to enjoy HiFi music any time and any where.
- It may not be compatible with all operating systems or devices
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