Yeah, that would probably be very stupid and even getting over my budget.
My safest bet is now getting the TubeMagic D1 + soundcard + amp.
I've contacted Maverick and Ryan told me that the TubeMagic supports only PCM 2-channel as an optical in.
Now I am not sure, if a soundcard can transmit virtualized surroundsound over that.
Therefore I am doing a little research, but it's too confusing, no clear information about that...
If it does though, I consider buying a D1.
//edit:
Found this on the internet:
[size=x-small]"And like all SPDIF implementations, 5.1 PCM over SPDIF is impossible.
You can output virtualized 5.1 via Dolby Headphone over SPDIF, because the audio stream is really 2.1, just virtualized.[/size]"
Source: http://forums.guru3d.com/showthread.php?t=368653
So it will be possible, as far as I understand it.
I wait for the answer from Ryan and Asus, but I might get this stuff now:
Maverick TubeMagic D1
Asus Xonar DSX
DALI Zensor 1
and for the amp I'm not decided yet. Maybe I'll get a topping t-amp. But I will have to import that, too, since they don't sell in my country.
(Maybe a Topping TP20-Mark2)
//edit2:
Found new information:
[size=x-small]"If you want a card to send out 5.1 S/Pdif for games, music and movies, you require a card with a DTS-C or DDL encoder.[/size]"
[size=x-small]"You need the Xonar DSX which has the Encoder."[/size]
Source: http://forums.guru3d.com/showthread.php?t=368653
So I will probably get the DSX.
//edit3:
Oh well, the DSX doesn't even have an optical out.. ?