There are 5 sound modes: - Standard - Movie - Music - Voice - Sports Out the box, "Standard" sound mode is the default setting. The display on the soundbar's front panel will show which mode you are in (excluding the Bar Studio) Dotted LED lights on the side of the JBL Studio indicates when sound more your are in, the patterns are as follows: - Standard: One LED dot - Movie: Two LED dots - Music: Three LED dots - Voice: Four LED dots - Sports: Five LED dots