Ultimate Ears BOOM 4 Review: Is This the Best Portable Bluetooth Speaker Under $150?

Ultimate Ears BOOM 4 is a compact, rugged portable Bluetooth speaker priced at $149.99, notable for travel and outdoor use. The Ultimate Ears BOOM 4 delivers 360-degree audio via two active drivers and two passive radiators. As a portable Bluetooth speaker with IP67 water, dust, and drop resistance, it floats for versatility across environments. The UE | BOOM app adds preset and custom EQ options, while the Magic Button enables on-speaker playback control and one-touch playlist access on supported services including Spotify, Amazon Music, and Apple Music. Bluetooth connectivity reaches up to 147 feet. The package combines durability, long battery life, customizable sound, and stable range within the sub-$150 category.