Re the aPT-X, I saw some specs on the BT400 which including a list of supported protocols. aPT-X was not among them. Also they don't advertise it, which they probably would (as does the BluMe).
I had to re-install the software but now I'm really happy with both the BluMe and the ASUS, including the sound quality.
I had to re-install the software but now I'm really happy with both the BluMe and the ASUS, including the sound quality.