UE Boom is a portable speaker manufactured by Ultimate Ears, supporting Bluetooth and wired connections.

[1] UE Boom has been praised for its industrial design, loudness, battery life, speakerphone capability, and its suitability for outdoor use, but criticized for its comparatively high price.

[8] CNET rated the UE Boom four stars out of five, favoring it as versatile, durable, portable and loud.

[9] Will Greenwald reviewed the UE Boom for PC Magazine, remarking favorably on its design, volume and stereo pairing function.

In testing the claim that the UE Boom produced "360-degree sound", he noted that the speaker's imaging did not suffer with different placement or listening position.