“Are there any key Differences between SL4Y and SN4A? Does the SN4A support ARC/eARC or the capability to attach additional speakers? Which one of these two is considered the premium or upgraded model?”
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According to LG website, the Dolby digital SN4A is 300W, the front speakers are 50x2 and the subwoofer is 200W, totaling 300W. Also the SN4A is HDMI and ARC compatible and optical whereas the SL4Y is only optical cable. SN4A is DTS virtual X for a a greater cinematic experience. SN4A is better well rounded choice for $10 more.
Sorry, there was a problem. Please try again later.Model SN4A is a newer Soundbar. It features DTS Virtual:X where as SL4Y does not. https://www.lg.com/us/sound-bars/lg-sn4a-sound-bar. ^Daphane
Sorry, there was a problem. Please try again later.IT looks like the SL4A is 300 watts and the other one is only 200 watts. However the SL4A does not mention anything about dts or virtual x only Dolby digital with the SL4A. The other model supports dts. I would probably ask an expert on which one to buy.
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