I didn't heard the jbl xtreme 3 but what I saw and read from other testers who had both the JBL xtreme 2 and xtreme 3 they sound equal, some even claim that the xtreme 2 is more balanced in sound. When you are used to a normal stereo set, even if that stereo set is from a very cheap class, the sound of that stereo set will crush the sound of these JBL's but also all other bluetooth speakers on the market because these JBL's are tested as the best among their competition. If you really like music and you want to hear your music in the most beautiful form, forget every bluetooth device and buy a stereo set. They are only suitable for the beach, garden ore swimming-pool. So outdoor use only. Even the cheapest bluetooth headphone have a better balanced sound. My advice for all bluetooth speaker builders, make them better balanced in sound or add a double(bass/treble) ore even a triple(bass/mid/treble) tone control
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