I've tested very thoroughly and the conclusion is very clear!
I can tell even more: did some reverse engineering and it seems all non downsampling HD lossless audio is done by the ASAudioHD.ax
file in the codec map.Using the same ASUS TMT 220.127.116.11 and the correct settings in the HDAV center and in the Windows 7 mixer for 8 channel output:
* ASAudioHD.ax (from Asus TMT 3 .139 - 07/20/2009)
--> DTS-HD MA only 6 discrete channels not downsampled
* ASAudioHD.ax (from retail TMT 3 .160 retail - 08/28/2009)
--> DTS-HD MA max of 8 discrete channels, but downsampled
I only have to replace the ASAudioHD.ax from the retail version into the Asus TMT 3 .139 and I have 8 channel discrete output, but downsampled with same settings in TMT3 and HDAV center.
Therefore a big call to anyone who uses this hardware and uses the 7.1 analog out from the daughter card in connection to a receiver to test this.
I also believe the manufacturer has to test this before and not the customer or at least has to publish non supporting elements.
I've reported this issue officialy to ASUS.
Geachte klant/ Dear customer,
I have send your question to the RD department when I get an answer I will let you know.
Met vriendelijke groet / Best regards,
Let's hope they will do something, admit and publish a new build not too long from now!