Originally Posted by fatbottom
No HDMI inputs! So you lose DVI-HDMI video switching.
You don't need it if you plan to hook it up to a PC. But if you plan to hook it up to a HDTV, it has HDMI ports, and you can control video and audio for all HDMI devices.
The OP sounded like he wanted a Sub for his PC system, along with a Receiver. I gave him a different option to fit his possible situation, that might do him just as good, but at a better price.
Now, if he wants this system to be a step in building his Home Theater system down the road. Then getting a A/V Receiver would make sense. But the z906 could still be a good way to go, depending on the HDTV he is using. It's a good, but cheaper solution.
But if he wants all separate components, then that's fine.
My whole point was, don't disregard the Logitech THX system, just because they are computer speakers. Because they blow away most home theater component systems. If money is a issue, I would give them a good look first, then decide.
My sister bought a nice sound bar for around $400. It was a joke compared to the z906, and I'm sure the z623 as well. I would be very surprised you would be disappointed.
Now, if you are looking $2000 sound out of $300 system, then you will be always unhappy.