There is no doubt that both of these heavy-duty semi-portable speakers offer excellent sound quality and some extraordinary features, but both these speakers have some significant differences. The JBL Xtreme is priced at $299 where the UE Megaboom is priced at $339. To start with these speakers are portable but not very compact, the UE Megaboom is 226 mm high, 83 mm wide and weighs roughly 877 grams.
On the other hand, the JBL Xtreme is 126 mm high, 283 mm wide and weighs a whopping 2.11 Kilograms. Clearly, the JBL Xtreme is not very portable because of how heavy it is compared to the UE Megaboom which is 1.24Kgs lighter, and this is why the Megaboom takes the lead in portability. The controls are not much different on these fantastic speakers, and both have an onboard control panel for comfortable and convenient volume and track change. Talking about the sound quality the JBL Xtreme takes the lead here, there is a significant difference in sound quality, and you get a much better experience and feel with the JBL Xtreme.
The reason for this difference is that the JBL Xtreme comes equipped with stereo speakers which means it delivers sound from independent channels on both left and right sides whereas the UE Megaboom does not have stereo speakers. The reason the JBL Xtreme weighs 1.24Kgs more than the UE Megaboom is because of the stereo speaker feature. Another feature which is only to be found in the JBL Xtreme is that the cable is detachable so in case it gets pulled with great force the wire will not break or drag the system with it instead it will detach however on the UE Megaboom the cable is attached and can not be detached. On paper the lowest frequency for JBL Xtreme is 70Hz and 65Hz for the UE Megaboom, this means that the Megaboom offers better bass. However, I did not notice any significant difference in the bass quality.
Both of these speakers are great and have their unique features however I prefer the UE Megaboom. The only reason for this is because of the weight difference, I travel a lot and carrying a device which weighs 2.11Kgs is just inconvenient, and so I carry the UE Megaboom which weighs a lot lesser than the Xtreme. It all comes down to your priorities and preferences if you prefer better sound quality and don’t mind carrying a device which weighs 2.11Kgs then JBL Xtreme is the one for you. With that being said I have been using the Xtreme for a while now but it is for in-home use only, and it works like a charm.