Reviews and Problems with Harman Kardon AVR 7550HD
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Harman Kardon AVR7550HD
5 August 2011
Excerpt: The AVR 7550HD 7 x 110W 7.2-channel A/V receiver with HDMI V1.3a repeater, audio/video processing and upscaling to 1080p was among the first receivers to offer Dolby Volume technology, which automatically adjusts volume levels when switching between sources and channels.