Teenage Engineering has brought its distinctive design philosophy to the OB-4 Bluetooth speaker, which takes inspiration from retro boom boxes with its carrying handle and boxy silhouette. The speaker weighs just 3.75 pounds and comes in a striking red color option, though it does show some wear with use. Its unconventional approach extends beyond aesthetics into its feature set, making it stand out in a crowded market.

The OB-4 boasts several unique capabilities not found in typical Bluetooth speakers. These include an FM radio tuner with antenna coiled in the handle, a built-in tape mode that allows instant rewinding of audio, and a disk mode with ambient sounds, noise generators, and sampling capabilities. The physical controls are delightfully quirky, with a volume knob that doubles as a rewind control and a battery indicator that requires tilting the speaker to view.

Sound-wise, the OB-4 delivers a bass-heavy signature through dual 4-inch drivers and two tweeters, offering a different listening experience compared to neutral-sounding competitors like Bose. At $579-$599, it commands a premium price, but justifies it through distinctive design and features. While mainstream alternatives offer better value for pure audio quality, the OB-4 appeals to consumers seeking a speaker that doubles as a conversation piece and creative tool.