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Old Jan 18, 2013 | 3:52 am
  #15  
mountainboy
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Originally Posted by IluvSQ
The ones on board are not noise-cancelling, they are just regular head sets.
the AC J headsets are noise cancelling, but an older, dated technology. The high-pitched squealing when you put the two ear pieces together is an indication of feedback in the cancellation circuitry. Newer headsets can do a lot better than that.
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