Aeskualpio
Head-Fier
Doesn't you need USB camera connector on iPad pro as on the iPhone?
Anyway, I have nw-A55, it supports LDAC on bluetooth and I tried from my Galaxy S8, but for some reason I found way better results with AAC fed by iPhone 6s.
It was the first time for me using LDAC, but I had tried AptxHD in the past with some bt speakers, and also found AAC from iPhone superior also in that case.
The new iPad Pro (2018 revision) is USB-C not Lightning connector, so you don’t need the Camera Connector kit.
You would for the current iPhone.
I connected the WM1A to my Apple TV this morning and played a variety of media (music, YouTube, movies). Great sound and really enjoyable
Cheers