Class-XD ™ : Crossover Displacement Technology



Class-XD™ is a new output stage technology I have devised which abolishes crossover distortion up to a certain power level, without any accompanying compromises. ‘XD’ is derived from the phrase ‘crossover displacement’: the technology is covered by British patent GB2424137B and is proprietary to Cambridge Audio. At the time of writing it has so far been used in the Azur 840A and 840 W power amplifiers, for both of which I did the electronic design. ‘Class-XD’ is a trademark of Audio Partnership PLC, and it should be pointed out that the use of the Class-XD concept and its trademark is restricted; I have permission from Cambridge Audio to use the term and describe the circuitry but ...

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