This one looks the ticket -> http://item.taobao.com/item.htm?spm=a1z10.3-c.w4002-4116195291.90.YKaDjm&id=36670547442
But does it work and will they ship to the uk.
The same shop showed some pictures with ZX1 and Hugo here
http://item.taobao.com/item.htm?id=19528377683
Similar one that should work for Hugo's recessed USB inputs
http://item.taobao.com/item.htm?id=42815904397
Actually you could consider asking Frank to make that cable for you since he's located in UK as well
http://www.head-fi.org/u/279519/toxic-cables
The connector for ZX1 costs only $17 shipped
http://www.lunashops.co.uk/goods-3428.html
Simply show Frank some pictures from this link and explain what you're looking for, he'll understand what to do but you've gotta tell him those USB inputs of Hugo are recessed
http://item.taobao.com/item.htm?id=19528377683
The battery life of ZX1 won't be great once you connect that to USB DAC like Hugo even though Hugo won't consume power via USB at all. Such battery drain should be fairly common for Android devices but no issues with iOS ones
http://forum.xda-developers.com/showthread.php?t=2587070
http://www.head-fi.org/t/595071/android-phones-and-usb-dacs/3285#post_9894392