Any 5.1 sound card should do. Then use 3.5mm to RCA to connect to your amps. That's what I did. Hope this helps!
I have browsed and searched other threads and viewed the FAQ but am still not quite satisfied.
I have two amps and need to know what sound-card I should be looking for.
I don't have any rear speakers in my car.
I have a sub with a built in amp.
I have an amp powering my front speaker.
Therefore I need RCA from the PC to the sub.
Therefore I need RCA from the PC to the amp which powers my front speakers.
What sort or outputs / specifications should I be looking for?
The documentation would tell you which jack is for which connection. Sometimes the jacks are configurable but you'll need to check unless someone else chimes in on this specific card and knows for sure.
The specs do say 3 output jacks including a front & sub so you should be good to go!
My 2007 Ford F350 Work Log located HERE
Ok thanks for your help everyone!