Harman Kardon DPR 1001 - Volume, Surround, and Digital Audio; Volume Control and Tone Adjustment; Surround Mode Selection; Digital Audio Playback Features

DDX Technology
DDX Technology
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Traditional Amplifier Technology
Traditional Amplifier Technology
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Class A/B Designs
Class A/B Designs
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Analog
Analog
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Low Efficiency
Low Efficiency
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High Efficiency Designs Emerged
High Efficiency Designs Emerged
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Analog Class D Designs
Analog Class D Designs
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Class G/H: Vary PS with Class A/B
Class G/H: Vary PS with Class A/B
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Development Goal
Development Goal
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High Efficiency + Digital = DDX
High Efficiency + Digital = DDX
DDX Technology