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- Jul 17, 2013
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Dude,the Astro Mixamp Pro 2013 uses Dolby Pro Logic IIx, upgrades Dolby 5.1 to 7.1 simulated surround sound. It also turns stereo into simulated surround sound. go to the link below and look at the back side of the astro mixamp pro 2013 and you will see Dolby Pro Logic IIx
http://www.kitguru.net/peripherals/headphones/ken-bevis/astro-a40-and-mixamp-review/4/
https://en.wikipedia.org/wiki/Dolby_Pro_Logic
It supports Dolby Digital 7.1. It even says it on their website.
You need to read your own links. You do not understand what Pro Logic IIx does. It upmixes stereo content. If the input was Dark Side of the Moon by Pink Floyd then the output would be on all speakers but the source was still stereo.
I'm not continuing this conversation anymore. 7.1 Virtual Surround Sound requires all 8 channels to work. If those channels aren't there being processed then you aren't getting 7.1 Virtual Surround Sound.