Just wondering, has anyone compared the Gustard U10 with the AP1 PP? I bought myself a AP1 PP yesterday and I struggle to find much of an improvement from the U10. I don't know what I'm expecting here but the AP1 is 10x in value, but the U10 is XMOS based.
I also had issues with the AP1 connecting with my USB3.0 port, which is why I'm probably returning it.
I might try the Audio GD DI-2014.
I found that the Ap1 & PP did improve the Hugo, added the elusive magical quality. However it did need at least 200 hours before it sounded its best. Also have mine running with no problems out of a USB3 port (Mac) The stock Audiophilleo connector gave me all sorts of problems so went with a longer S/PDIF cable which works 100%.