The EarFun UBOOM L has a passable frequency response accuracy. Its sound profile is fairly even, especially in the mids, where most voices and lead instruments are reproduced. However, the roll-off in the treble range makes audio sound less detailed. Like most small speakers, it also lacks a lot of low-bass, so you don't get the deep thump and rumble in genres like EDM and hip-hop.

This speaker comes with Indoor and Outdoor sound modes, which are designed to adjust audio to suit the space you're in. Outdoor mode is designed for listening in larger, more open spaces like a backyard. We tested the speaker in Indoor mode since it offered the most even sound profile. You can see a comparison of the two sound modes here, and you'll notice that Outdoor mode brings a touch less punch in the bass. We also tested the speaker with Video Mode turned on and off, and we found that it had no impact on the sound.