I bet you are not running it with Apple Yesemitie. Mine worked well for years until I updated my Apple operating system to Yesemite. Then it stopped working. Yulong say they cannot provide a software update to make it compatible with the upgraded operating system. Hence, it is now a useless...

The U18 still does not work. Apparently Yulong cannot provide an updates driver. I would not buy anything Yulong again as their equipment compatibility is not maintained and you could end up with a useless bit of junk.

I have recently upgraded to Yosemite and also find the U-18 no longer works. Please advise how this can be fixed. Thanks.

One question that occurs to me is which would sound better, getting a DA8 or a D18 along with a high end USB to SPDIF converter if the goal is simply to go from a Mac Mini to the converter for use in a speaker system only; no headphones. The overall price would be similar. Thanks for your...

Thank you Project86. It is an interesting comparison as both DACs have volume control. I would use the DAC to drive active speakers directly. I hope you will cover this aspect when you let us have your DA8 review. I am really looking forward to that. Best regards

Project86 Have you heard the Eximus DAC? And how does the DA8 compare with it? Thanks for your helpful insight

Thanks for the pointer mrcasey. I have now read that thread and value your evaluation. Cheers.

So, the new Yulong D8 is now available. Has anyone heard it yet? I have the D18. How do they compare?

Thanks. I appreciate your comments even if not a direct comparison. I intend to use the ATC speakers rather than the headphone. They are mid field speakers and have the very quick response as they are active (with powerful amp just behind very large magnets to exert total control over the...

Hello project86 Thank you for your original review of the D18. As a result of reading your review I purchased the D18 and am now using it with the U18 (with separate p/s). I am very pleased with the sound (driving ATC50 active speakers directly over XLR) on high quality music, but find the sound...

Hi I use a Mac-mini to a U18 with a separate p/s. The coax o/p goes to a D18 and then to my main speakers. The AES/EBU o/p goes to a digital equaliser (acting as a low pass filter) and then to the sub-woofer. So, both outputs are used simultaneously. This works perfectly. Hope your split works...

Thanks mrcasey. Your comments and photos have been really helpful.

mrcasey That cense power supply looks impressive. Thanks for the photo. Is this the power supply that you get for 75 dollars from Grant Fidelity?

Thank you for your help guys, especially the comprehensive experiments Ian. Much appreciated.

Mrcasey I have a question on functionality: is it possible to use two outputs from the U18 simultaneously? For example, AES/EBU to one DAC and SPDIF to a second DAC at the same time? I want to send one signal to my main speakers and another signal to my subs. Thanks for your help.