Unable to stream 192kHz on DSM 5

[rweten]

Could it possibly be a fault with the Ethernet port on the NAS?

You could install MinimServer/MinimStreamer on a PC or Mac and set this up with a test library containing a single 24/192 file. If you are able to stream this file to the Klimax with transcoding, the NAS is the likely suspect.

Edit: Another possibility is a faulty cable. It is worth eliminating this by swapping cables before you do any further investigation.
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Looks unlikely to be a fault with the Ethernet port on the NAS. I've tested that by copying files back and forth to my PC and it transfers gigabytes of data in a few seconds, suggesting it's running at full rate.

I've now done the test you suggested, running Minimstreamer on my PC, and the files play properly.

I'm now going to move on and test the cable (which is a bit of a pig to replace as it's now running under floors and carpets etc. I'll also test beckphotonik's suggestion about controlling the port configuration, but my first port of call will be the cable.

Thanks for all your help,
R