I can recommend a Berlin based company named "Teufel"
This set is STUNNING!
By far best value for money I have ever owned.
Ships with Decoderstation 5
I get DTS 5.1 & DolbyD 5.1 via Toslik.
Just use a Toslink cable and this adapter to plug it into your Mac's headphone jack.
Smaller options are available as well
I would absolute +1 this!!! I own this set myself and it knocks you off your feet.