JBL Xtreme Speaker: Enjoy high-quality audio at the poolside without worrying about getting this splash-proof speaker wet. Dual USB ports let you charge your USB devices for flexibility, and Bluetooth simplifies connectivity to your compatible mobile devices.
Just bought this last night and played around with it for about 2hrs once I got home. Sound quality is great, but I wish there was more bass sound. I worry about the bass reflex response on this unit and how it will hold up over time. It's neat to see it from a side view, but if anything comes in contact with this unit while at maximum volume, you can kiss your bass goodbye! The Harman Kardon Onyx and Onyx Studio 2 has a greater bass response/woofer and is also $100 cheaper. The only reason I returned the Onyx unit and opted for the JBL Xtreme was for the portability and it's Splash proof design. The Onyx, you can not fold the legs which makes it cumbersome to travel with, and it would not make a good poolside/beach speaker since it lacks a splash proof design. Other than these 2 reasons, I would have kept the Onyx. The JBL Xtreme also has about 15hrs of playback time, and can charge 2 devices simultaneously. I guess you have to weigh out your options and what you are looking for. If you are going to leave this speaker out in your room/house and not travel with it, go for the Onyx or Onyx Studio 2. If you are going for portability and still want great sound with the option to recharge your device, go with the JBL Xtreme. For those of you who don't know, Harman Kardon owns JBL, so no matter which product you buy, you will definitely be satisfied.