Hi! I have HIFIME UH1-DIGITAL that I have tested with many different devices. But with all of them I had the problem with well noticeable clicks at the moment of stop playing or track switching. This problem exists only when USB-speed switch is on High-speed mode. The speakers (espetialy Subwoofer) have a wide amplitude kicks on that.
I have used different PCs and notebooks, toslink connection to av-recievers - all the same.