I thought I might post the results from early use and testing my E5:
Connected via USB cable (that came with the E5), I am able to play 24bit HD audio files on my Mac (connected to my Win8 MC media server) -- Sounds great!!
Connected via MFi certified cable from my iPhone 5s, I can use JRemote to play the same HD tracks (JRemote set for no transcoding) -- Sounds great!!
Connected via Bluetooth after pairing the E5 with my iPhone 5s, I can use JRemote to play the same HD tracks (JRemote set for no transcoding, but I assume I'm listening to Bt compression) -- Sounds great!!
I'm not sure why, but the same Bluetooth test failed with my iPad Mini 3, in which JRemote simply reported "something went wrong with playback". I believe the interested reader may assume something is mysteriously wrong with this trial, and you might assume it should work just like with the iPhone (both loaded with iOS 8.1.3). If I definitely cannot get it to work with my iPad I'll report back ...