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I have a problem with my ALC892, on an ASRock mainboard (ASRock 890FX Deluxe4).

I get only stereo sounds if I use SPDIF connection, in general. My amp shows that is getting surround sound only when I use the Test feature of Windows 7. This test feature allows to know which formats are supported by the audio chip. The tests render correctly both Dolby Digital and DTS. You can find this test under Sounds, Playback Devices, Select Digital Audio, then "Properties".

I am using Windows 7 x64, with the latest drivers from the official Realtek website. I also tested other driver versions, both from the Realtek website and from the ASRock one, but had no luck.

Thanks for the help.

Some specs:

  • CPU: AMD Phenom II X4 965
  • MOBO: ASRock 890FX Deluxe4 (with onboard Realtek ALC892)
  • Audio amp: Onkyo R-380 (works fine with other sources like PS3 and Xbox 360)
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1 Answer 1

It'll only play surround sound if the audio source you're playing is Dolby Digital (AC3) or DTS. It'll do spdif passthrough to your amp (via coaxial or optical cable). For all other sources, mp3/flac/aac, it'll be 2ch Stereo PCM only.

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How can I test this, besides using the Windows 7 test I mentioned before? And how can I get surround sounds, for example, in games? In the options of Starcraft II I can see that I can enable surround sound, but my amp shows that is reproducing a stereo signal. Thanks anyway for your reply. –  Alex Sep 22 '10 at 14:32
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