Hi Rob, I see the options as follows :-
Option 1
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The gaming headset i would need to get a HDMI Audio extractor with an optical out that supports Dolby, DTS, DTS-HD etc to make this work, but this adds another £30 to the cost, bumping it up to a whopping £280 - This is just too much for poorer quality gaming headset.
Option 2
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The AKG K550 option, for this I would need to get the same Hdmi Audio extractor as above, plus an additional Dolby Surround processor which would cost around £160 in total. This is a more messy option, but i get much better quality cans that i can plug into portable devices. With this option, i could possibly upgrade the external processor with a DTS Headphone X one when they become available.
Option 3
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Buy the Sony MDR-HW700, which has it's own base station with HDMI Inputs / Outputs and built in Sound processor cover most formats. It's a very neat solution, but doesn't support DTS Headphone X and it doesn't have a 3.5mm socket on the cans to allow me to use it with my other devices, such as tablet or phone.
Option 4
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Buy a AVR to drive the cans, again this is a neat option like the Sony but at the moment, there are no AVR's supporting DTS Headphone X. some people have suggested checking out Yamaha AVR that have Silent Cinema technology, 2hich also work with any headphones.
Trouble is that this option is also expensive as i would need to buy a AVR + decent set of Cans, so were probably looking at £300+
Just beginning to wonder if headphone X will ever take off, as it's been nearly 2 years since it was first introduced at CES, yet there seems virtually no support, i.e. only 1 headset in the entire market with no AVR or external Sound processors available.