It's a little embarrassing to write this but... It seems that Zidoo never payed for a full license for the Windows XMOS driver. This driver is used to get all the features with Windows USB audio, like Native DSD, multiple clocks, multichannel, ajustable latency. We noticed this on the Z8 DAC forum, with some users noticing that the supplied driver doesn't support native DSD. Zidoo offers a driver from 2017 with limited funcionalities on USB audio: Only DoP (no native DSD), single clock, fixed latency, no multichannel (only stereo). All details here: http://forum.zidoo.tv/index.php?threads/eversolo-z6-z8-native-dsd-support.95814/#post-193257 While other companies like SMSL, Topping, Sabaj, Aune, Loxjie (and many others) is constantly paying fees to get the new drivers for its customers, Zidoo refuses to provide full funcionality for its products to save some money. Please notice that if you use DMP-A6 with the native streamer apps as source, you will get native DSD support. But if you use a PC with Windows connected by USB, you will not get native DSD, or ajustable latency, or multiple clock domains. The USB driver is the same for Z6, Z8 and A6. A fellow forum member had to hack an old driver from another manufacturer to get Native DSD support. How unreal is this?