Sound cards that supports encoding DTS/Dolby Digital on the fly?

[King Mustard]

GPU: NVIDIA GeForce GTX 1080
Motherboard: MSI Z170A Gaming Pro Carbon (Realtek ALC1150)
TV: Toshiba 48U7653DB
AV receiver: Pioneer VSX-324-K-P

I want to play games from my PC to my 4K TV.

When connecting my PC directly to my TV via. HDMI, my TV limits the sound output to stereo (even when it's connected to my AV receiver via. ARC).

It's also no good connecting my PC to the AV receiver as the receiver doesn't support 4k/60, only 4k/25 (or 30, not sure).

The solution is to connect the PC to the TV via. HDMI for the 4k/60 image and then connect the PC to the AV receiver via. an optical cable.

However, the onboard sound on my motherboard can not encode DTS/Dolby Digital, so I will need a sound card that supports this.

Any suggestions for sound cards that supports encoding DTS/Dolby Digital on the fly?

I believe Creative's 2012 Sound Blaster Z supports this, but at £70, I feel it's a bit pricey for what I need it for.

 

[Lutfij]

1| I've said it in another thread asking a similar question, stay away from Creative product's, their driver support is horrendous.
2| You might want to look into the Asus Xonar DGX.
3| It's a bit questionable if your receiver actually supports surround sound through the optical input since I've had a similar issue with a friends system where the HTIB(Home theater in box) could playback DVD's and BluRay in surround sound but lacked multichannel input, as is the case with you having only stereo input.
4| Might want to test the theory in #3 by borrowing a sound card listed in #2 from a friend to try out.