Highlights. Offers display resolutions of up to 1080p for detailed images. Provides a dynamic contrast ratio 30,000:1 for vivid graphics. HDMI connection allows for the transmission of both video and audio digital signals. SRS TruSurround XT System for rich sound experience. Built in ATSC/Clear QAM tuner. Wide viewing angles of 178 for both horizontal and vertical angles. Overview. The Samsung LN46A550 has an astounding 30,000:1 contrast ratio for the sharp, most realistic picture quality.