"What features would distinguish a gaming audio system from the regular one?"
In my experience, there aren't any such features. I have a music studio, lots of audiophile equipment and lots of gaming gadgets. I sometimes use them interchangeably.
'Gaming' gear is usually targeted at people's perceptions or desires rather than their requirements. If there was one major difference, buying audiophile gear offers a large advantage: They're aimed at an audience who know how to critique their products. Games accessories are aimed at the 'gadget' market - and as such as more likely to be over-priced, flimsy and inferior to an equivalent developed for the audio industry.
Steelsound headphones, for example, can offer excellent sound quality but they can't take any sort of a beating (or moisture) and for the price you'd expect that. An equivalent set of Sony headphones is superior. It's not that the Sony headphones bring any special features to the table, it's the economics of a utility versus a toy.
5.1/7.1/9.1/45.1 speaker setups are intended for home theatre. They are not relevant for video gaming and headphones will serve you just fine. Pro gamers use headphones - there's no justification.
If you are going to buy a decent set of headphones you need to upgrade your sound card to get the benefit of them. I highly recommend little USB stick sound cards, such as those from Steelsound. They're convenient as hell.
Now I haven't really described what definition of 'better' I'm using. Better is fidelity. If you're looking to be competitive, you need to be able to pick out small cues and individual sounds from the mix. That tiny little click underneath all the explosions? That's your opponent reloading!
It's also very important the sound isn't too tinny or thick - huge liabilities when you're trying to concentrate. This comes naturally from getting good equipment with a wide natural dynamic range.
If you're interested in speakers specifically, you can do a lot worse than buying short-range studio reference monitors such as these: http://www.camdensounds.co.uk/monitors/edirol-ma-7a-bk-analogue-stereo-micro-studio-monitors.html They are designed for the studio, they won't break the bank (in comparison to equivalent home theatre/gaming kit) and they sound just sublime - but they're only useful if you're sat in just the right place in front of the screen, conveniently exactly where a gamer sits!
OK, your basic problem is your connection hookup. Here's what you need to do.
(Note: All images below are from the X12's manual (PDF))
- Hook up your headphones to the x360 via USB, this provides power for the headphones. Now, connect the green X12 connection to an Xbox 360 Audio Adapter connected to your system via the red/white. Alternatively, you can connect the green cable to your TV headhones/audio out port (make sure the TV's setting have the audio outputted to these connections.
- If you wish to use the headset for chat as well, connect the talkback cable between the headset and the X12's amplifier and set the system settings like the following image.
Best Answer
It was a TV flaw. I exchanged the TV for a new one of the same model and have been trouble free since. The TV was a Sony W800C.