The Hyperboom is a large and heavy, but basically portable Bluetooth speaker. Its incredible audio performance makes it a worthwhile purchase, especially for planned use outdoors or in large rooms. In particular, the powerful bass performance impressed us in the tested.

The Hyperboom is Ultimate Ears' best speaker yet. The six-pound speaker delivers a clean sound with great bass and precise highs. The mids could be a bit stronger and the maximum volume is a bit low at 92 decibels. Nevertheless, it is a welcome party guest thanks to its long battery life and many extras.