So the JBL Boombox 3 is a very portable Bluetooth speaker that gets impressively loud and it also has a decent amount of bass to it thanks to its new speaker set up. However, if you’re looking for something to constantly take on the go with you, the Boombox 3 is a little on the larger side when compared to either the JBL Xtreme 3 or Partybox Encore. So today we’re going to see how the Boombox 3 stakes up to both the Xtreme 3 and Partybox Encore and lets see which one is right for you.