Hi Nathan,

- If I group the AxiomAirs will they then appear as one DLNA/UPnP device on the network and handle in sync playback between themselves?

I'm waiting on an answer from our programmer to confirm this, but I believe that it will work as you have described.

- If I group the AxiomAirs will they then appear as one Airplay device on the network and handle in sync playback between themselves?

An AirPlay stream cannot be broadcast to other AxiomAirs. We'd love to include this capability, but Apple forbids it.

- Is there a Line Level or headphone out (so I can occasionally feed a PA system from one of the AA)

No, just a summed-mono subwoofer line level output.

- I understand the Airplay quality limits, but do you support 24/192 bit over DLNA/UPnP ?

24/192 works fine over UPnP. I have tesed this both from Android devices using BubbleUPnP and from a PC running Foobar.

Thanks,

Andrew