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The SB4020M soundbar is 40″, with 2.1 channels, and two speakers. It features SRS TruSurround HD, SRS TrueVolume , stereo audio channels, and 2000Hz highest frequency response, 90Hz lowest.
40″ 2.1 Channels
SRS TrueSurround HD
2.75″ (2), 90Hz-2000Hz
Digital optical audio, analog stereo, 3.5mm stereo