Hi, I have registered first to thank Amir for so many reviews and to all members for the good information and sense of humor they share in this forum.
And second to share this about the 'sleep' problem of the Topping D10.
A few days ago I received a D10, serial number 1806, Revision v6.F2. I've tested with two computers and the problem seems related to USB 2.0 vs USB 3.0 ports.
With an Intel NUC6PJY that has only USB 3.0 ports the Topping doesn't awake after sleep (Windows 10 or Ubuntu 16). Connected to an old iMac that has only USB 2.0 ports there is no problem, when in suspend mode the Topping displays first "---" en then ".". When the iMac return from sleep the Topping awakes and display the sample rate.
So maybe some incompatibility with USB 3.0 controller.
[sorry for my english...]