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Message: <blockquote data-quote="helotaxi" data-source="post: 1963742" data-attributes="member: 550915"><p>They upped the sampling freq of the Class D circuit to well outside the audible frequency range.  It lowers the efficiency of the amp a it but it works.  Distortion can be made below the audible threshold.  There have been full range Class D amps used in other portable electronics for quite awhile.  It is onlt fairly recently that it has caught on in the car audio realm.  Blade Audio made a series of Class D full range amps in the early 90s.</p></blockquote><p></p>

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