Gonk,

Does it apply bass management to them? I ask because I'm thinking of getting the HD-XA2 and using the analog connections for True HD et al, and there seems to be some issues with the way the XA2 puts out the bass/lfe. Pretty long thread over on AVS in the HDDVD hardware section:

http://www.avsforum.com/avs-vb/showthread.php?t=823837&page=1&pp=30

Thanks,
Brian