Asrock p67 ext 4 7.1 audio?

no one ?

Have you tried feeding the tuner from the optical lead from the card and putting it through your stereo?

Yes , actually that how I have it now, I thought throu hdmi (gpu)) I was going to get better sound, but not, only stereo

The limitation may be the imput on your receiver/amplifier. I know that one of my optical feeds on my tuner, dedicated to video, only reproduces stereo, while the optical feed for audio produces 7.1 sound.

While there are some works produced in true 7.1, the majority of music is produced in stereo and is translated into 7.1 by circuitry.

I don't have an answer for you. I'd look at the specs (if you can get them) on the audio production from the GTX 560 ti and compare them to the specs of the Onkio.

i dont have notting to test 7.1 at the moment, i m going to look for a blu ray title with 7.1 sound and see what happens
thanks