Ear Force X1 - FAQs
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Mixing Various Sound Levels - Balancing Game Sounds, Chatting etc. 
The Ear Force X2 (being Wireless) does not have a way to balance the levels 
of  various sounds in the game with the voice Chat. The Ear Force X1 however, 
has the ability to adjust these levels for better sonic balance. The X1 DOES
provide an additional little amplifier and level control to raise the level 
of the Live Chat over the game soundtrack, if desired. 
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