|Betso TCD-1, 788T and all wireless can be AC-powered|
The AC delivery is solid, fluctuating only about 1/10th of a volt when turning various powered wireless units on and off. Considering anything you are powering is capable of handling variable DC voltage, this is plenty good. I have several different versions of the Remote Audio BDS as well as a PSC Power Star Mini for battery distribution and the adapter tested fine in all of them.
Urgena was also thinking about usage across the world. "The 110-220 volt capacity makes it work in just about any country. The user just has to buy the appropriate plug adapter. Alternatively, they can buy an OSHA cable with the correct plug on it for their country. That's why I chose that particular AC plug configuration...because it is universal."
It comes in a tidy little neoprene case, which is quite nice for packing and traveling. The build quality is sufficiently sturdy. I don't forsee any damage occurring to the adapter, provided TSA doesn't crush it for fun.
Check with your favorite sound shop for an NP1 AC Power Adapter by LMC Sound. It retails for about $135. I now have 3 of them.