The JBL Flip speakers were already really good. Changes to the newest fourth-generation version make them even better.
At first glance, JBL's Flip 4 Bluetooth portable speaker looks very similar to 2016's Flip 3. But looks can be deceiving: it's actually a slightly bigger speaker, weighing 1.14 lbs (517 g) -- 0.14 pound more than its predecessor -- and it's covered in more durable fabric with a tighter weave. As part of that external design change, the Flip 4 gets some changes on the inside, including new drivers and a presumably bigger battery that delivers 12 hours of battery life instead of the Flip 3's 10 hours. The speaker is also now fully waterproof instead of just splashproof.
Like the Flip 3, the Flip 4 can be stood up vertically or laid down horizontally -- thus its Flip moniker -- and comes with a removable lanyard that allows you to hang the speaker from a shower head, a branch outside or a loop on your backpack. Available in six colors, it costs $100 or £120. Official Australia availability isn't yet known, but that US price converts to about AU$140.
So, how much better is the Flip 4 and how does it stack up against the wireless mini Bluetooth speaker competition at this price point?
The short answer to the first question is that it's actually a significant upgrade over the Flip 3. Not only does it play a little louder, but it sounds better, with improved bass response and slightly better clarity.
I compared this speaker to Ultimate Ears' similarly priced Wonderboom and the more expensive UE Boom 2. The Wonderboom is shorter and squatter and delivers more bass; it comes off as a bigger speaker than the Flip 4. However, with some tracks the Flip 4 sounded more natural, particularly in the midrange, and I preferred its sound when listening to certain songs.
One of the problems of reviewing the performance of these small Bluetooth speakers is that their sound quality isn't consistent. With some tracks they sound quite good, and with others they sound like a small speaker that's getting pushed a little too hard and straining itself.
Overall the Wonderboom does come out on top for sound quality, but it's a close race, and for its size and price, the Flip 4 is a very good performer and has such extras as a built-in microphone, so it works as a speakerphone (the Wonderboom has no speakerphone or auxiliary input).
While it doesn't play quite as loud or have as good battery life as the UE Boom 2 (which is almost the exact same size and shape), it's a good alternative to that speaker if you're looking to save a little money. And hopefully, in time, this speaker will come down in price, making it an even better value. It's easily the best Flip yet.